diff --git a/gradle/libs.versions.toml b/gradle/libs.versions.toml
index ca9bb5e4..0d3102a6 100644
--- a/gradle/libs.versions.toml
+++ b/gradle/libs.versions.toml
@@ -3,7 +3,7 @@ kotlin = "2.0.21"
 coroutines = "1.9.0"
 serialization = "1.7.3"
 okhttp = "5.0.0-alpha.14" # Major version is locked by Tachiyomi extensions
-javalin = "4.6.8" # Javalin 5.0.0+ requires Java 11
+javalin = "6.3.0" # Javalin 5.0.0+ requires Java 11
 jackson = "2.13.3" # jackson version locked by javalin, ref: `io.javalin.core.util.OptionalDependency`
 exposed = "0.40.1"
 dex2jar = "v64" # Stuck until https://github.com/ThexXTURBOXx/dex2jar/issues/27 is fixed
@@ -104,6 +104,7 @@ xmlpull = "xmlpull:xmlpull:1.1.3.4a"
 
 # Disk & File
 appdirs = "net.harawata:appdirs:1.2.2"
+cache4k = "io.github.reactivecircus.cache4k:cache4k:0.13.0"
 zip4j = "net.lingala.zip4j:zip4j:2.11.5"
 commonscompress = "org.apache.commons:commons-compress:1.27.1"
 junrar = "com.github.junrar:junrar:7.5.5"
@@ -200,7 +201,7 @@ okhttp = [
 ]
 javalin = [
     "javalin-core",
-    "javalin-openapi",
+    #"javalin-openapi",
 ]
 jackson = [
     "jackson-databind",
diff --git a/server/build.gradle.kts b/server/build.gradle.kts
index e682b81c..9b84c0d0 100644
--- a/server/build.gradle.kts
+++ b/server/build.gradle.kts
@@ -72,6 +72,7 @@ dependencies {
     implementation(libs.asm)
 
     // Disk & File
+    implementation(libs.cache4k)
     implementation(libs.zip4j)
     implementation(libs.commonscompress)
     implementation(libs.junrar)
diff --git a/server/src/main/kotlin/suwayomi/tachidesk/global/controller/GlobalMetaController.kt b/server/src/main/kotlin/suwayomi/tachidesk/global/controller/GlobalMetaController.kt
index 3916a557..d3c9da40 100644
--- a/server/src/main/kotlin/suwayomi/tachidesk/global/controller/GlobalMetaController.kt
+++ b/server/src/main/kotlin/suwayomi/tachidesk/global/controller/GlobalMetaController.kt
@@ -7,7 +7,7 @@ package suwayomi.tachidesk.global.controller
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at https://mozilla.org/MPL/2.0/. */
 
-import io.javalin.http.HttpCode
+import io.javalin.http.HttpStatus
 import suwayomi.tachidesk.global.impl.GlobalMeta
 import suwayomi.tachidesk.server.util.formParam
 import suwayomi.tachidesk.server.util.handler
@@ -28,7 +28,7 @@ object GlobalMetaController {
                 ctx.status(200)
             },
             withResults = {
-                httpCode(HttpCode.OK)
+                httpCode(HttpStatus.OK)
             },
         )
 
@@ -48,8 +48,8 @@ object GlobalMetaController {
                 ctx.status(200)
             },
             withResults = {
-                httpCode(HttpCode.OK)
-                httpCode(HttpCode.NOT_FOUND)
+                httpCode(HttpStatus.OK)
+                httpCode(HttpStatus.NOT_FOUND)
             },
         )
 }
diff --git a/server/src/main/kotlin/suwayomi/tachidesk/global/controller/SettingsController.kt b/server/src/main/kotlin/suwayomi/tachidesk/global/controller/SettingsController.kt
index c9ddea29..c456f517 100644
--- a/server/src/main/kotlin/suwayomi/tachidesk/global/controller/SettingsController.kt
+++ b/server/src/main/kotlin/suwayomi/tachidesk/global/controller/SettingsController.kt
@@ -7,7 +7,7 @@ package suwayomi.tachidesk.global.controller
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at https://mozilla.org/MPL/2.0/. */
 
-import io.javalin.http.HttpCode
+import io.javalin.http.HttpStatus
 import suwayomi.tachidesk.global.impl.About
 import suwayomi.tachidesk.global.impl.AboutDataClass
 import suwayomi.tachidesk.global.impl.AppUpdate
@@ -31,7 +31,7 @@ object SettingsController {
                 ctx.json(About.getAbout())
             },
             withResults = {
-                json<AboutDataClass>(HttpCode.OK)
+                json<AboutDataClass>(HttpStatus.OK)
             },
         )
 
@@ -45,12 +45,13 @@ object SettingsController {
                 }
             },
             behaviorOf = { ctx ->
-                ctx.future(
-                    future { AppUpdate.checkUpdate() },
-                )
+                ctx.future {
+                    future { AppUpdate.checkUpdate() }
+                        .thenApply { ctx.json(it) }
+                }
             },
             withResults = {
-                json<Array<UpdateDataClass>>(HttpCode.OK)
+                json<Array<UpdateDataClass>>(HttpStatus.OK)
             },
         )
 }
diff --git a/server/src/main/kotlin/suwayomi/tachidesk/graphql/controller/GraphQLController.kt b/server/src/main/kotlin/suwayomi/tachidesk/graphql/controller/GraphQLController.kt
index 68e66931..701d90c1 100644
--- a/server/src/main/kotlin/suwayomi/tachidesk/graphql/controller/GraphQLController.kt
+++ b/server/src/main/kotlin/suwayomi/tachidesk/graphql/controller/GraphQLController.kt
@@ -9,6 +9,7 @@ package suwayomi.tachidesk.graphql.controller
 
 import io.javalin.http.ContentType
 import io.javalin.http.Context
+import io.javalin.http.HttpStatus
 import io.javalin.websocket.WsConfig
 import suwayomi.tachidesk.graphql.server.TachideskGraphQLServer
 import suwayomi.tachidesk.graphql.server.TemporaryFileStorage
@@ -20,11 +21,17 @@ object GraphQLController {
 
     /** execute graphql query */
     fun execute(ctx: Context) {
-        ctx.future(
+        ctx.future {
             future {
                 server.execute(ctx)
-            },
-        )
+            }.thenApply {
+                if (it != null) {
+                    ctx.json(it)
+                } else {
+                    ctx.status(HttpStatus.BAD_REQUEST)
+                }
+            }
+        }
     }
 
     fun playground(ctx: Context) {
diff --git a/server/src/main/kotlin/suwayomi/tachidesk/graphql/mutations/BackupMutation.kt b/server/src/main/kotlin/suwayomi/tachidesk/graphql/mutations/BackupMutation.kt
index 752c887c..916f8a43 100644
--- a/server/src/main/kotlin/suwayomi/tachidesk/graphql/mutations/BackupMutation.kt
+++ b/server/src/main/kotlin/suwayomi/tachidesk/graphql/mutations/BackupMutation.kt
@@ -30,7 +30,7 @@ class BackupMutation {
         val (clientMutationId, backup) = input
 
         return future {
-            val restoreId = ProtoBackupImport.restore(backup.content)
+            val restoreId = ProtoBackupImport.restore(backup.content())
 
             withTimeout(10.seconds) {
                 ProtoBackupImport.notifyFlow.first {
diff --git a/server/src/main/kotlin/suwayomi/tachidesk/graphql/mutations/ExtensionMutation.kt b/server/src/main/kotlin/suwayomi/tachidesk/graphql/mutations/ExtensionMutation.kt
index 1ff152ab..83a65c8c 100644
--- a/server/src/main/kotlin/suwayomi/tachidesk/graphql/mutations/ExtensionMutation.kt
+++ b/server/src/main/kotlin/suwayomi/tachidesk/graphql/mutations/ExtensionMutation.kt
@@ -165,9 +165,9 @@ class ExtensionMutation {
 
         return future {
             asDataFetcherResult {
-                Extension.installExternalExtension(extensionFile.content, extensionFile.filename)
+                Extension.installExternalExtension(extensionFile.content(), extensionFile.filename())
 
-                val dbExtension = transaction { ExtensionTable.select { ExtensionTable.apkName eq extensionFile.filename }.first() }
+                val dbExtension = transaction { ExtensionTable.select { ExtensionTable.apkName eq extensionFile.filename() }.first() }
 
                 InstallExternalExtensionPayload(
                     clientMutationId,
diff --git a/server/src/main/kotlin/suwayomi/tachidesk/graphql/queries/BackupQuery.kt b/server/src/main/kotlin/suwayomi/tachidesk/graphql/queries/BackupQuery.kt
index 4e3e16d9..ba286c00 100644
--- a/server/src/main/kotlin/suwayomi/tachidesk/graphql/queries/BackupQuery.kt
+++ b/server/src/main/kotlin/suwayomi/tachidesk/graphql/queries/BackupQuery.kt
@@ -26,7 +26,7 @@ class BackupQuery {
     )
 
     fun validateBackup(input: ValidateBackupInput): ValidateBackupResult {
-        val result = ProtoBackupValidator.validate(input.backup.content)
+        val result = ProtoBackupValidator.validate(input.backup.content())
         return ValidateBackupResult(
             result.missingSourceIds.map { ValidateBackupSource(it.first, it.second) },
             result.missingTrackers.map { ValidateBackupTracker(it) },
diff --git a/server/src/main/kotlin/suwayomi/tachidesk/graphql/server/JavalinGraphQLRequestParser.kt b/server/src/main/kotlin/suwayomi/tachidesk/graphql/server/JavalinGraphQLRequestParser.kt
index 56639f51..d300454e 100644
--- a/server/src/main/kotlin/suwayomi/tachidesk/graphql/server/JavalinGraphQLRequestParser.kt
+++ b/server/src/main/kotlin/suwayomi/tachidesk/graphql/server/JavalinGraphQLRequestParser.kt
@@ -13,7 +13,7 @@ import com.expediagroup.graphql.server.types.GraphQLRequest
 import com.expediagroup.graphql.server.types.GraphQLServerRequest
 import io.javalin.http.Context
 import io.javalin.http.UploadedFile
-import io.javalin.plugin.json.jsonMapper
+import io.javalin.json.fromJsonString
 import java.io.IOException
 
 class JavalinGraphQLRequestParser : GraphQLRequestParser<Context> {
@@ -33,20 +33,13 @@ class JavalinGraphQLRequestParser : GraphQLRequestParser<Context> {
                 }
 
             val request =
-                context.jsonMapper().fromJsonString(
-                    formParam,
-                    GraphQLServerRequest::class.java,
-                )
+                context.jsonMapper().fromJsonString<GraphQLServerRequest>(formParam)
 
-            @Suppress("UNCHECKED_CAST")
             val map =
                 context
                     .formParam("map")
                     ?.let {
-                        context.jsonMapper().fromJsonString(
-                            it,
-                            Map::class.java as Class<Map<String, List<String>>>,
-                        )
+                        context.jsonMapper().fromJsonString<Map<String, List<String>>>(it)
                     }.orEmpty()
 
             val mapItems =
diff --git a/server/src/main/kotlin/suwayomi/tachidesk/graphql/server/subscriptions/ApolloSubscriptionProtocolHandler.kt b/server/src/main/kotlin/suwayomi/tachidesk/graphql/server/subscriptions/ApolloSubscriptionProtocolHandler.kt
index 25f12949..c63dc19c 100644
--- a/server/src/main/kotlin/suwayomi/tachidesk/graphql/server/subscriptions/ApolloSubscriptionProtocolHandler.kt
+++ b/server/src/main/kotlin/suwayomi/tachidesk/graphql/server/subscriptions/ApolloSubscriptionProtocolHandler.kt
@@ -69,7 +69,7 @@ class ApolloSubscriptionProtocolHandler(
 
         if (operationMessage.type != GQL_PING.type) {
             logger.debug {
-                "GraphQL subscription client message, sessionId=${context.sessionId} type=${operationMessage.type} operationName=${
+                "GraphQL subscription client message, sessionId=${context.sessionId()} type=${operationMessage.type} operationName=${
                     getOperationName(operationMessage.payload)
                 } ${
                     if (serverConfig.gqlDebugLogsEnabled.value) {
@@ -118,7 +118,7 @@ class ApolloSubscriptionProtocolHandler(
 
         if (sessionState.doesOperationExist(operationMessage)) {
             sessionState.terminateSession(context, CloseStatus(4409, "Subscriber for ${operationMessage.id} already exists"))
-            logger.info("Already subscribed to operation ${operationMessage.id} for session ${context.sessionId}")
+            logger.info("Already subscribed to operation ${operationMessage.id} for session ${context.sessionId()}")
             return emptyFlow()
         }
 
@@ -174,7 +174,7 @@ class ApolloSubscriptionProtocolHandler(
     private fun onPing(): Flow<SubscriptionOperationMessage> = flowOf(pongMessage)
 
     private fun onDisconnect(context: WsContext): Flow<SubscriptionOperationMessage> {
-        logger.debug("Session \"${context.sessionId}\" disconnected")
+        logger.debug("Session \"${context.sessionId()}\" disconnected")
         sessionState.terminateSession(context, CloseStatus(1000, "Normal Closure"))
         return emptyFlow()
     }
diff --git a/server/src/main/kotlin/suwayomi/tachidesk/graphql/server/subscriptions/ApolloSubscriptionSessionState.kt b/server/src/main/kotlin/suwayomi/tachidesk/graphql/server/subscriptions/ApolloSubscriptionSessionState.kt
index 05515023..332d3b01 100644
--- a/server/src/main/kotlin/suwayomi/tachidesk/graphql/server/subscriptions/ApolloSubscriptionSessionState.kt
+++ b/server/src/main/kotlin/suwayomi/tachidesk/graphql/server/subscriptions/ApolloSubscriptionSessionState.kt
@@ -36,14 +36,14 @@ internal class ApolloSubscriptionSessionState {
         context: WsContext,
         graphQLContext: GraphQLContext,
     ) {
-        cachedGraphQLContext[context.sessionId] = graphQLContext
+        cachedGraphQLContext[context.sessionId()] = graphQLContext
     }
 
     /**
      * Return the graphQL context for this session.
      */
     fun getGraphQLContext(context: WsContext): GraphQLContext =
-        cachedGraphQLContext[context.sessionId] ?: emptyMap<Any, Any>().toGraphQLContext()
+        cachedGraphQLContext[context.sessionId()] ?: emptyMap<Any, Any>().toGraphQLContext()
 
     /**
      * Save the operation that is sending data to the client.
@@ -58,7 +58,7 @@ internal class ApolloSubscriptionSessionState {
         val id = operationMessage.id
         if (id != null) {
             activeOperations[id] = subscription
-            sessionToOperationId.getOrPut(context.sessionId) { CopyOnWriteArrayList() } += id
+            sessionToOperationId.getOrPut(context.sessionId()) { CopyOnWriteArrayList() } += id
         }
     }
 
@@ -87,10 +87,10 @@ internal class ApolloSubscriptionSessionState {
         context: WsContext,
         code: CloseStatus,
     ) {
-        sessionToOperationId.remove(context.sessionId)?.forEach {
+        sessionToOperationId.remove(context.sessionId())?.forEach {
             removeActiveOperation(it)
         }
-        cachedGraphQLContext.remove(context.sessionId)
+        cachedGraphQLContext.remove(context.sessionId())
         context.closeSession(code)
     }
 
diff --git a/server/src/main/kotlin/suwayomi/tachidesk/manga/controller/BackupController.kt b/server/src/main/kotlin/suwayomi/tachidesk/manga/controller/BackupController.kt
index c4507eb1..1713e597 100644
--- a/server/src/main/kotlin/suwayomi/tachidesk/manga/controller/BackupController.kt
+++ b/server/src/main/kotlin/suwayomi/tachidesk/manga/controller/BackupController.kt
@@ -1,6 +1,6 @@
 package suwayomi.tachidesk.manga.controller
 
-import io.javalin.http.HttpCode
+import io.javalin.http.HttpStatus
 import suwayomi.tachidesk.manga.impl.backup.BackupFlags
 import suwayomi.tachidesk.manga.impl.backup.proto.ProtoBackupExport
 import suwayomi.tachidesk.manga.impl.backup.proto.ProtoBackupImport
@@ -28,14 +28,16 @@ object BackupController {
                 }
             },
             behaviorOf = { ctx ->
-                ctx.future(
+                ctx.future {
                     future {
-                        ProtoBackupImport.restoreLegacy(ctx.bodyAsInputStream())
-                    },
-                )
+                        ProtoBackupImport.restoreLegacy(ctx.bodyInputStream())
+                    }.thenApply {
+                        ctx.json(it)
+                    }
+                }
             },
             withResults = {
-                httpCode(HttpCode.OK)
+                httpCode(HttpStatus.OK)
             },
         )
 
@@ -54,15 +56,17 @@ object BackupController {
             },
             behaviorOf = { ctx ->
                 // TODO: rewrite this with ctx.uploadedFiles(), don't call the multipart field "backup.proto.gz"
-                ctx.future(
+                ctx.future {
                     future {
-                        ProtoBackupImport.restoreLegacy(ctx.uploadedFile("backup.proto.gz")!!.content)
-                    },
-                )
+                        ProtoBackupImport.restoreLegacy(ctx.uploadedFile("backup.proto.gz")!!.content())
+                    }.thenApply {
+                        ctx.json(it)
+                    }
+                }
             },
             withResults = {
-                httpCode(HttpCode.OK)
-                httpCode(HttpCode.NOT_FOUND)
+                httpCode(HttpStatus.OK)
+                httpCode(HttpStatus.NOT_FOUND)
             },
         )
 
@@ -77,7 +81,7 @@ object BackupController {
             },
             behaviorOf = { ctx ->
                 ctx.contentType("application/octet-stream")
-                ctx.future(
+                ctx.future {
                     future {
                         ProtoBackupExport.createBackup(
                             BackupFlags(
@@ -88,11 +92,11 @@ object BackupController {
                                 includeHistory = true,
                             ),
                         )
-                    },
-                )
+                    }.thenApply { ctx.result(it) }
+                }
             },
             withResults = {
-                stream(HttpCode.OK)
+                stream(HttpStatus.OK)
             },
         )
 
@@ -109,7 +113,7 @@ object BackupController {
                 ctx.contentType("application/octet-stream")
 
                 ctx.header("Content-Disposition", """attachment; filename="${Backup.getFilename()}"""")
-                ctx.future(
+                ctx.future {
                     future {
                         ProtoBackupExport.createBackup(
                             BackupFlags(
@@ -120,11 +124,11 @@ object BackupController {
                                 includeHistory = true,
                             ),
                         )
-                    },
-                )
+                    }.thenApply { ctx.result(it) }
+                }
             },
             withResults = {
-                stream(HttpCode.OK)
+                stream(HttpStatus.OK)
             },
         )
 
@@ -138,14 +142,16 @@ object BackupController {
                 }
             },
             behaviorOf = { ctx ->
-                ctx.future(
+                ctx.future {
                     future {
-                        ProtoBackupValidator.validate(ctx.bodyAsInputStream())
-                    },
-                )
+                        ProtoBackupValidator.validate(ctx.bodyInputStream())
+                    }.thenApply {
+                        ctx.json(it)
+                    }
+                }
             },
             withResults = {
-                json<ProtoBackupValidator.ValidationResult>(HttpCode.OK)
+                json<ProtoBackupValidator.ValidationResult>(HttpStatus.OK)
             },
         )
 
@@ -167,14 +173,16 @@ object BackupController {
                 }
             },
             behaviorOf = { ctx ->
-                ctx.future(
+                ctx.future {
                     future {
-                        ProtoBackupValidator.validate(ctx.uploadedFile("backup.proto.gz")!!.content)
-                    },
-                )
+                        ProtoBackupValidator.validate(ctx.uploadedFile("backup.proto.gz")!!.content())
+                    }.thenApply {
+                        ctx.json(it)
+                    }
+                }
             },
             withResults = {
-                json<ProtoBackupValidator.ValidationResult>(HttpCode.OK)
+                json<ProtoBackupValidator.ValidationResult>(HttpStatus.OK)
             },
         )
 }
diff --git a/server/src/main/kotlin/suwayomi/tachidesk/manga/controller/CategoryController.kt b/server/src/main/kotlin/suwayomi/tachidesk/manga/controller/CategoryController.kt
index 4aed4491..0ea20c1f 100644
--- a/server/src/main/kotlin/suwayomi/tachidesk/manga/controller/CategoryController.kt
+++ b/server/src/main/kotlin/suwayomi/tachidesk/manga/controller/CategoryController.kt
@@ -7,7 +7,7 @@ package suwayomi.tachidesk.manga.controller
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at https://mozilla.org/MPL/2.0/. */
 
-import io.javalin.http.HttpCode
+import io.javalin.http.HttpStatus
 import suwayomi.tachidesk.manga.impl.Category
 import suwayomi.tachidesk.manga.impl.CategoryManga
 import suwayomi.tachidesk.manga.model.dataclass.CategoryDataClass
@@ -31,7 +31,7 @@ object CategoryController {
                 ctx.json(Category.getCategoryList())
             },
             withResults = {
-                json<Array<CategoryDataClass>>(HttpCode.OK)
+                json<Array<CategoryDataClass>>(HttpStatus.OK)
             },
         )
 
@@ -49,12 +49,12 @@ object CategoryController {
                 if (Category.createCategory(name) != -1) {
                     ctx.status(200)
                 } else {
-                    ctx.status(HttpCode.BAD_REQUEST)
+                    ctx.status(HttpStatus.BAD_REQUEST)
                 }
             },
             withResults = {
-                httpCode(HttpCode.OK)
-                httpCode(HttpCode.BAD_REQUEST)
+                httpCode(HttpStatus.OK)
+                httpCode(HttpStatus.BAD_REQUEST)
             },
         )
 
@@ -77,7 +77,7 @@ object CategoryController {
                 ctx.status(200)
             },
             withResults = {
-                httpCode(HttpCode.OK)
+                httpCode(HttpStatus.OK)
             },
         )
 
@@ -96,7 +96,7 @@ object CategoryController {
                 ctx.status(200)
             },
             withResults = {
-                httpCode(HttpCode.OK)
+                httpCode(HttpStatus.OK)
             },
         )
 
@@ -114,7 +114,7 @@ object CategoryController {
                 ctx.json(CategoryManga.getCategoryMangaList(categoryId))
             },
             withResults = {
-                json<Array<MangaDataClass>>(HttpCode.OK)
+                json<Array<MangaDataClass>>(HttpStatus.OK)
             },
         )
 
@@ -134,7 +134,7 @@ object CategoryController {
                 ctx.status(200)
             },
             withResults = {
-                httpCode(HttpCode.OK)
+                httpCode(HttpStatus.OK)
             },
         )
 
@@ -155,8 +155,8 @@ object CategoryController {
                 ctx.status(200)
             },
             withResults = {
-                httpCode(HttpCode.OK)
-                httpCode(HttpCode.NOT_FOUND)
+                httpCode(HttpStatus.OK)
+                httpCode(HttpStatus.NOT_FOUND)
             },
         )
 }
diff --git a/server/src/main/kotlin/suwayomi/tachidesk/manga/controller/DownloadController.kt b/server/src/main/kotlin/suwayomi/tachidesk/manga/controller/DownloadController.kt
index fd947ff3..56cc6e04 100644
--- a/server/src/main/kotlin/suwayomi/tachidesk/manga/controller/DownloadController.kt
+++ b/server/src/main/kotlin/suwayomi/tachidesk/manga/controller/DownloadController.kt
@@ -7,7 +7,7 @@ package suwayomi.tachidesk.manga.controller
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at https://mozilla.org/MPL/2.0/. */
 
-import io.javalin.http.HttpCode
+import io.javalin.http.HttpStatus
 import io.javalin.websocket.WsConfig
 import kotlinx.serialization.json.Json
 import suwayomi.tachidesk.manga.impl.download.DownloadManager
@@ -48,7 +48,7 @@ object DownloadController {
                 DownloadManager.start()
             },
             withResults = {
-                httpCode(HttpCode.OK)
+                httpCode(HttpStatus.OK)
             },
         )
 
@@ -62,12 +62,13 @@ object DownloadController {
                 }
             },
             behaviorOf = { ctx ->
-                ctx.future(
-                    future { DownloadManager.stop() },
-                )
+                ctx.future {
+                    future { DownloadManager.stop() }
+                        .thenApply { ctx.status(HttpStatus.OK) }
+                }
             },
             withResults = {
-                httpCode(HttpCode.OK)
+                httpCode(HttpStatus.OK)
             },
         )
 
@@ -81,12 +82,13 @@ object DownloadController {
                 }
             },
             behaviorOf = { ctx ->
-                ctx.future(
-                    future { DownloadManager.clear() },
-                )
+                ctx.future {
+                    future { DownloadManager.clear() }
+                        .thenApply { ctx.status(HttpStatus.OK) }
+                }
             },
             withResults = {
-                httpCode(HttpCode.OK)
+                httpCode(HttpStatus.OK)
             },
         )
 
@@ -102,15 +104,15 @@ object DownloadController {
                 }
             },
             behaviorOf = { ctx, chapterIndex, mangaId ->
-                ctx.future(
+                ctx.future {
                     future {
                         DownloadManager.enqueueWithChapterIndex(mangaId, chapterIndex)
-                    },
-                )
+                    }.thenApply { ctx.status(HttpStatus.OK) }
+                }
             },
             withResults = {
-                httpCode(HttpCode.OK)
-                httpCode(HttpCode.NOT_FOUND)
+                httpCode(HttpStatus.OK)
+                httpCode(HttpStatus.NOT_FOUND)
             },
         )
 
@@ -125,14 +127,14 @@ object DownloadController {
             },
             behaviorOf = { ctx ->
                 val inputs = json.decodeFromString<EnqueueInput>(ctx.body())
-                ctx.future(
+                ctx.future {
                     future {
                         DownloadManager.enqueue(inputs)
-                    },
-                )
+                    }.thenApply { ctx.status(HttpStatus.OK) }
+                }
             },
             withResults = {
-                httpCode(HttpCode.OK)
+                httpCode(HttpStatus.OK)
             },
         )
 
@@ -148,14 +150,14 @@ object DownloadController {
             },
             behaviorOf = { ctx ->
                 val input = json.decodeFromString<EnqueueInput>(ctx.body())
-                ctx.future(
+                ctx.future {
                     future {
                         DownloadManager.dequeue(input)
-                    },
-                )
+                    }.thenApply { ctx.status(HttpStatus.OK) }
+                }
             },
             withResults = {
-                httpCode(HttpCode.OK)
+                httpCode(HttpStatus.OK)
             },
         )
 
@@ -176,7 +178,7 @@ object DownloadController {
                 ctx.status(200)
             },
             withResults = {
-                httpCode(HttpCode.OK)
+                httpCode(HttpStatus.OK)
             },
         )
 
@@ -196,7 +198,7 @@ object DownloadController {
                 DownloadManager.reorder(chapterIndex, mangaId, to)
             },
             withResults = {
-                httpCode(HttpCode.OK)
+                httpCode(HttpStatus.OK)
             },
         )
 }
diff --git a/server/src/main/kotlin/suwayomi/tachidesk/manga/controller/ExtensionController.kt b/server/src/main/kotlin/suwayomi/tachidesk/manga/controller/ExtensionController.kt
index da0cc099..9b43d9de 100644
--- a/server/src/main/kotlin/suwayomi/tachidesk/manga/controller/ExtensionController.kt
+++ b/server/src/main/kotlin/suwayomi/tachidesk/manga/controller/ExtensionController.kt
@@ -7,7 +7,7 @@ package suwayomi.tachidesk.manga.controller
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at https://mozilla.org/MPL/2.0/. */
 
-import io.javalin.http.HttpCode
+import io.javalin.http.HttpStatus
 import mu.KotlinLogging
 import suwayomi.tachidesk.manga.impl.extension.Extension
 import suwayomi.tachidesk.manga.impl.extension.ExtensionsList
@@ -31,14 +31,16 @@ object ExtensionController {
                 }
             },
             behaviorOf = { ctx ->
-                ctx.future(
+                ctx.future {
                     future {
                         ExtensionsList.getExtensionList()
-                    },
-                )
+                    }.thenApply {
+                        ctx.json(it)
+                    }
+                }
             },
             withResults = {
-                json<Array<ExtensionDataClass>>(HttpCode.OK)
+                json<Array<ExtensionDataClass>>(HttpStatus.OK)
             },
         )
 
@@ -53,16 +55,18 @@ object ExtensionController {
                 }
             },
             behaviorOf = { ctx, pkgName ->
-                ctx.future(
+                ctx.future {
                     future {
                         Extension.installExtension(pkgName)
-                    },
-                )
+                    }.thenApply {
+                        ctx.status(it)
+                    }
+                }
             },
             withResults = {
-                httpCode(HttpCode.CREATED)
-                httpCode(HttpCode.FOUND)
-                httpCode(HttpCode.INTERNAL_SERVER_ERROR)
+                httpCode(HttpStatus.CREATED)
+                httpCode(HttpStatus.FOUND)
+                httpCode(HttpStatus.INTERNAL_SERVER_ERROR)
             },
         )
 
@@ -81,18 +85,23 @@ object ExtensionController {
             },
             behaviorOf = { ctx ->
                 val uploadedFile = ctx.uploadedFile("file")!!
-                logger.debug { "Uploaded extension file name: " + uploadedFile.filename }
+                logger.debug { "Uploaded extension file name: " + uploadedFile.filename() }
 
-                ctx.future(
+                ctx.future {
                     future {
-                        Extension.installExternalExtension(uploadedFile.content, uploadedFile.filename)
-                    },
-                )
+                        Extension.installExternalExtension(
+                            uploadedFile.content(),
+                            uploadedFile.filename(),
+                        )
+                    }.thenApply {
+                        ctx.status(it)
+                    }
+                }
             },
             withResults = {
-                httpCode(HttpCode.CREATED)
-                httpCode(HttpCode.FOUND)
-                httpCode(HttpCode.INTERNAL_SERVER_ERROR)
+                httpCode(HttpStatus.CREATED)
+                httpCode(HttpStatus.FOUND)
+                httpCode(HttpStatus.INTERNAL_SERVER_ERROR)
             },
         )
 
@@ -107,17 +116,19 @@ object ExtensionController {
                 }
             },
             behaviorOf = { ctx, pkgName ->
-                ctx.future(
+                ctx.future {
                     future {
                         Extension.updateExtension(pkgName)
-                    },
-                )
+                    }.thenApply {
+                        ctx.status(it)
+                    }
+                }
             },
             withResults = {
-                httpCode(HttpCode.CREATED)
-                httpCode(HttpCode.FOUND)
-                httpCode(HttpCode.NOT_FOUND)
-                httpCode(HttpCode.INTERNAL_SERVER_ERROR)
+                httpCode(HttpStatus.CREATED)
+                httpCode(HttpStatus.FOUND)
+                httpCode(HttpStatus.NOT_FOUND)
+                httpCode(HttpStatus.INTERNAL_SERVER_ERROR)
             },
         )
 
@@ -136,10 +147,10 @@ object ExtensionController {
                 ctx.status(200)
             },
             withResults = {
-                httpCode(HttpCode.CREATED)
-                httpCode(HttpCode.FOUND)
-                httpCode(HttpCode.NOT_FOUND)
-                httpCode(HttpCode.INTERNAL_SERVER_ERROR)
+                httpCode(HttpStatus.CREATED)
+                httpCode(HttpStatus.FOUND)
+                httpCode(HttpStatus.NOT_FOUND)
+                httpCode(HttpStatus.INTERNAL_SERVER_ERROR)
             },
         )
 
@@ -154,19 +165,19 @@ object ExtensionController {
                 }
             },
             behaviorOf = { ctx, apkName ->
-                ctx.future(
+                ctx.future {
                     future { Extension.getExtensionIcon(apkName) }
                         .thenApply {
                             ctx.header("content-type", it.second)
                             val httpCacheSeconds = 365.days.inWholeSeconds
                             ctx.header("cache-control", "max-age=$httpCacheSeconds, immutable")
-                            it.first
-                        },
-                )
+                            ctx.result(it.first)
+                        }
+                }
             },
             withResults = {
-                image(HttpCode.OK)
-                httpCode(HttpCode.NOT_FOUND)
+                image(HttpStatus.OK)
+                httpCode(HttpStatus.NOT_FOUND)
             },
         )
 }
diff --git a/server/src/main/kotlin/suwayomi/tachidesk/manga/controller/MangaController.kt b/server/src/main/kotlin/suwayomi/tachidesk/manga/controller/MangaController.kt
index 3575d282..1eb6364c 100644
--- a/server/src/main/kotlin/suwayomi/tachidesk/manga/controller/MangaController.kt
+++ b/server/src/main/kotlin/suwayomi/tachidesk/manga/controller/MangaController.kt
@@ -7,7 +7,7 @@ package suwayomi.tachidesk.manga.controller
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at https://mozilla.org/MPL/2.0/. */
 
-import io.javalin.http.HttpCode
+import io.javalin.http.HttpStatus
 import kotlinx.serialization.json.Json
 import suwayomi.tachidesk.manga.impl.CategoryManga
 import suwayomi.tachidesk.manga.impl.Chapter
@@ -41,15 +41,15 @@ object MangaController {
                 }
             },
             behaviorOf = { ctx, mangaId, onlineFetch ->
-                ctx.future(
+                ctx.future {
                     future {
                         Manga.getManga(mangaId, onlineFetch)
-                    },
-                )
+                    }.thenApply { ctx.json(it) }
+                }
             },
             withResults = {
-                json<MangaDataClass>(HttpCode.OK)
-                httpCode(HttpCode.NOT_FOUND)
+                json<MangaDataClass>(HttpStatus.OK)
+                httpCode(HttpStatus.NOT_FOUND)
             },
         )
 
@@ -65,15 +65,15 @@ object MangaController {
                 }
             },
             behaviorOf = { ctx, mangaId, onlineFetch ->
-                ctx.future(
+                ctx.future {
                     future {
                         Manga.getMangaFull(mangaId, onlineFetch)
-                    },
-                )
+                    }.thenApply { ctx.json(it) }
+                }
             },
             withResults = {
-                json<MangaDataClass>(HttpCode.OK)
-                httpCode(HttpCode.NOT_FOUND)
+                json<MangaDataClass>(HttpStatus.OK)
+                httpCode(HttpStatus.NOT_FOUND)
             },
         )
 
@@ -88,19 +88,19 @@ object MangaController {
                 }
             },
             behaviorOf = { ctx, mangaId ->
-                ctx.future(
+                ctx.future {
                     future { Manga.getMangaThumbnail(mangaId) }
                         .thenApply {
                             ctx.header("content-type", it.second)
                             val httpCacheSeconds = 1.days.inWholeSeconds
                             ctx.header("cache-control", "max-age=$httpCacheSeconds")
-                            it.first
-                        },
-                )
+                            ctx.result(it.first)
+                        }
+                }
             },
             withResults = {
-                image(HttpCode.OK)
-                httpCode(HttpCode.NOT_FOUND)
+                image(HttpStatus.OK)
+                httpCode(HttpStatus.NOT_FOUND)
             },
         )
 
@@ -115,13 +115,14 @@ object MangaController {
                 }
             },
             behaviorOf = { ctx, mangaId ->
-                ctx.future(
-                    future { Library.addMangaToLibrary(mangaId) },
-                )
+                ctx.future {
+                    future { Library.addMangaToLibrary(mangaId) }
+                        .thenApply { ctx.status(HttpStatus.OK) }
+                }
             },
             withResults = {
-                httpCode(HttpCode.OK)
-                httpCode(HttpCode.NOT_FOUND)
+                httpCode(HttpStatus.OK)
+                httpCode(HttpStatus.NOT_FOUND)
             },
         )
 
@@ -136,13 +137,14 @@ object MangaController {
                 }
             },
             behaviorOf = { ctx, mangaId ->
-                ctx.future(
-                    future { Library.removeMangaFromLibrary(mangaId) },
-                )
+                ctx.future {
+                    future { Library.removeMangaFromLibrary(mangaId) }
+                        .thenApply { ctx.status(HttpStatus.OK) }
+                }
             },
             withResults = {
-                httpCode(HttpCode.OK)
-                httpCode(HttpCode.NOT_FOUND)
+                httpCode(HttpStatus.OK)
+                httpCode(HttpStatus.NOT_FOUND)
             },
         )
 
@@ -160,7 +162,7 @@ object MangaController {
                 ctx.json(CategoryManga.getMangaCategories(mangaId))
             },
             withResults = {
-                json<Array<CategoryDataClass>>(HttpCode.OK)
+                json<Array<CategoryDataClass>>(HttpStatus.OK)
             },
         )
 
@@ -180,7 +182,7 @@ object MangaController {
                 ctx.status(200)
             },
             withResults = {
-                httpCode(HttpCode.OK)
+                httpCode(HttpStatus.OK)
             },
         )
 
@@ -200,7 +202,7 @@ object MangaController {
                 ctx.status(200)
             },
             withResults = {
-                httpCode(HttpCode.OK)
+                httpCode(HttpStatus.OK)
             },
         )
 
@@ -221,8 +223,8 @@ object MangaController {
                 ctx.status(200)
             },
             withResults = {
-                httpCode(HttpCode.OK)
-                httpCode(HttpCode.NOT_FOUND)
+                httpCode(HttpStatus.OK)
+                httpCode(HttpStatus.NOT_FOUND)
             },
         )
 
@@ -242,11 +244,14 @@ object MangaController {
                 }
             },
             behaviorOf = { ctx, mangaId, onlineFetch ->
-                ctx.future(future { Chapter.getChapterList(mangaId, onlineFetch) })
+                ctx.future {
+                    future { Chapter.getChapterList(mangaId, onlineFetch) }
+                        .thenApply { ctx.json(it) }
+                }
             },
             withResults = {
-                json<Array<ChapterDataClass>>(HttpCode.OK)
-                httpCode(HttpCode.NOT_FOUND)
+                json<Array<ChapterDataClass>>(HttpStatus.OK)
+                httpCode(HttpStatus.NOT_FOUND)
             },
         )
 
@@ -266,7 +271,7 @@ object MangaController {
                 Chapter.modifyChapters(input, mangaId)
             },
             withResults = {
-                httpCode(HttpCode.OK)
+                httpCode(HttpStatus.OK)
             },
         )
 
@@ -291,7 +296,7 @@ object MangaController {
                 )
             },
             withResults = {
-                httpCode(HttpCode.OK)
+                httpCode(HttpStatus.OK)
             },
         )
 
@@ -307,11 +312,14 @@ object MangaController {
                 }
             },
             behaviorOf = { ctx, mangaId, chapterIndex ->
-                ctx.future(future { getChapterDownloadReadyByIndex(chapterIndex, mangaId) })
+                ctx.future {
+                    future { getChapterDownloadReadyByIndex(chapterIndex, mangaId) }
+                        .thenApply { ctx.json(it) }
+                }
             },
             withResults = {
-                json<ChapterDataClass>(HttpCode.OK)
-                httpCode(HttpCode.NOT_FOUND)
+                json<ChapterDataClass>(HttpStatus.OK)
+                httpCode(HttpStatus.NOT_FOUND)
             },
         )
 
@@ -336,7 +344,7 @@ object MangaController {
                 ctx.status(200)
             },
             withResults = {
-                httpCode(HttpCode.OK)
+                httpCode(HttpStatus.OK)
             },
         )
 
@@ -357,8 +365,8 @@ object MangaController {
                 ctx.status(200)
             },
             withResults = {
-                httpCode(HttpCode.OK)
-                httpCode(HttpCode.NOT_FOUND)
+                httpCode(HttpStatus.OK)
+                httpCode(HttpStatus.NOT_FOUND)
             },
         )
 
@@ -381,8 +389,8 @@ object MangaController {
                 ctx.status(200)
             },
             withResults = {
-                httpCode(HttpCode.OK)
-                httpCode(HttpCode.NOT_FOUND)
+                httpCode(HttpStatus.OK)
+                httpCode(HttpStatus.NOT_FOUND)
             },
         )
 
@@ -401,19 +409,19 @@ object MangaController {
                 }
             },
             behaviorOf = { ctx, mangaId, chapterIndex, index ->
-                ctx.future(
+                ctx.future {
                     future { Page.getPageImage(mangaId, chapterIndex, index) }
                         .thenApply {
                             ctx.header("content-type", it.second)
                             val httpCacheSeconds = 1.days.inWholeSeconds
                             ctx.header("cache-control", "max-age=$httpCacheSeconds")
-                            it.first
-                        },
-                )
+                            ctx.result(it.first)
+                        }
+                }
             },
             withResults = {
-                image(HttpCode.OK)
-                httpCode(HttpCode.NOT_FOUND)
+                image(HttpStatus.OK)
+                httpCode(HttpStatus.NOT_FOUND)
             },
         )
 }
diff --git a/server/src/main/kotlin/suwayomi/tachidesk/manga/controller/SourceController.kt b/server/src/main/kotlin/suwayomi/tachidesk/manga/controller/SourceController.kt
index ded3f639..d67be69c 100644
--- a/server/src/main/kotlin/suwayomi/tachidesk/manga/controller/SourceController.kt
+++ b/server/src/main/kotlin/suwayomi/tachidesk/manga/controller/SourceController.kt
@@ -7,7 +7,7 @@ package suwayomi.tachidesk.manga.controller
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at https://mozilla.org/MPL/2.0/. */
 
-import io.javalin.http.HttpCode
+import io.javalin.http.HttpStatus
 import kotlinx.serialization.json.Json
 import suwayomi.tachidesk.manga.impl.MangaList
 import suwayomi.tachidesk.manga.impl.Search
@@ -38,7 +38,7 @@ object SourceController {
                 ctx.json(Source.getSourceList())
             },
             withResults = {
-                json<Array<SourceDataClass>>(HttpCode.OK)
+                json<Array<SourceDataClass>>(HttpStatus.OK)
             },
         )
 
@@ -56,8 +56,8 @@ object SourceController {
                 ctx.json(Source.getSource(sourceId)!!)
             },
             withResults = {
-                json<SourceDataClass>(HttpCode.OK)
-                httpCode(HttpCode.NOT_FOUND)
+                json<SourceDataClass>(HttpStatus.OK)
+                httpCode(HttpStatus.NOT_FOUND)
             },
         )
 
@@ -73,14 +73,14 @@ object SourceController {
                 }
             },
             behaviorOf = { ctx, sourceId, pageNum ->
-                ctx.future(
+                ctx.future {
                     future {
                         MangaList.getMangaList(sourceId, pageNum, popular = true)
-                    },
-                )
+                    }.thenApply { ctx.json(it) }
+                }
             },
             withResults = {
-                json<PagedMangaListDataClass>(HttpCode.OK)
+                json<PagedMangaListDataClass>(HttpStatus.OK)
             },
         )
 
@@ -96,14 +96,14 @@ object SourceController {
                 }
             },
             behaviorOf = { ctx, sourceId, pageNum ->
-                ctx.future(
+                ctx.future {
                     future {
                         MangaList.getMangaList(sourceId, pageNum, popular = false)
-                    },
-                )
+                    }.thenApply { ctx.json(it) }
+                }
             },
             withResults = {
-                json<PagedMangaListDataClass>(HttpCode.OK)
+                json<PagedMangaListDataClass>(HttpStatus.OK)
             },
         )
 
@@ -121,7 +121,7 @@ object SourceController {
                 ctx.json(Source.getSourcePreferences(sourceId))
             },
             withResults = {
-                json<Array<Source.PreferenceObject>>(HttpCode.OK)
+                json<Array<Source.PreferenceObject>>(HttpStatus.OK)
             },
         )
 
@@ -141,7 +141,7 @@ object SourceController {
                 ctx.json(Source.setSourcePreference(sourceId, preferenceChange.position, preferenceChange.value))
             },
             withResults = {
-                httpCode(HttpCode.OK)
+                httpCode(HttpStatus.OK)
             },
         )
 
@@ -160,7 +160,7 @@ object SourceController {
                 ctx.json(Search.getFilterList(sourceId, reset))
             },
             withResults = {
-                json<Array<Search.FilterObject>>(HttpCode.OK)
+                json<Array<Search.FilterObject>>(HttpStatus.OK)
             },
         )
 
@@ -189,7 +189,7 @@ object SourceController {
                 ctx.json(Search.setFilter(sourceId, filterChange))
             },
             withResults = {
-                httpCode(HttpCode.OK)
+                httpCode(HttpStatus.OK)
             },
         )
 
@@ -206,10 +206,13 @@ object SourceController {
                 }
             },
             behaviorOf = { ctx, sourceId, searchTerm, pageNum ->
-                ctx.future(future { Search.sourceSearch(sourceId, searchTerm, pageNum) })
+                ctx.future {
+                    future { Search.sourceSearch(sourceId, searchTerm, pageNum) }
+                        .thenApply { ctx.json(it) }
+                }
             },
             withResults = {
-                json<PagedMangaListDataClass>(HttpCode.OK)
+                json<PagedMangaListDataClass>(HttpStatus.OK)
             },
         )
 
@@ -227,10 +230,13 @@ object SourceController {
             },
             behaviorOf = { ctx, sourceId, pageNum ->
                 val filter = json.decodeFromString<FilterData>(ctx.body())
-                ctx.future(future { Search.sourceFilter(sourceId, pageNum, filter) })
+                ctx.future {
+                    future { Search.sourceFilter(sourceId, pageNum, filter) }
+                        .thenApply { ctx.json(it) }
+                }
             },
             withResults = {
-                json<PagedMangaListDataClass>(HttpCode.OK)
+                json<PagedMangaListDataClass>(HttpStatus.OK)
             },
         )
 
@@ -249,7 +255,7 @@ object SourceController {
                 ctx.json(Search.sourceGlobalSearch(searchTerm))
             },
             withResults = {
-                httpCode(HttpCode.OK)
+                httpCode(HttpStatus.OK)
             },
         )
 }
diff --git a/server/src/main/kotlin/suwayomi/tachidesk/manga/controller/TrackController.kt b/server/src/main/kotlin/suwayomi/tachidesk/manga/controller/TrackController.kt
index 1239799d..28541091 100644
--- a/server/src/main/kotlin/suwayomi/tachidesk/manga/controller/TrackController.kt
+++ b/server/src/main/kotlin/suwayomi/tachidesk/manga/controller/TrackController.kt
@@ -7,7 +7,7 @@ package suwayomi.tachidesk.manga.controller
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at https://mozilla.org/MPL/2.0/. */
 
-import io.javalin.http.HttpCode
+import io.javalin.http.HttpStatus
 import kotlinx.serialization.json.Json
 import mu.KotlinLogging
 import suwayomi.tachidesk.manga.impl.track.Track
@@ -36,7 +36,7 @@ object TrackController {
                 ctx.json(Track.getTrackerList())
             },
             withResults = {
-                json<Array<TrackerDataClass>>(HttpCode.OK)
+                json<Array<TrackerDataClass>>(HttpStatus.OK)
             },
         )
 
@@ -52,11 +52,14 @@ object TrackController {
             behaviorOf = { ctx ->
                 val input = json.decodeFromString<Track.LoginInput>(ctx.body())
                 logger.debug { "tracker login $input" }
-                ctx.future(future { Track.login(input) })
+                ctx.future {
+                    future { Track.login(input) }
+                        .thenApply { ctx.status(HttpStatus.OK) }
+                }
             },
             withResults = {
-                httpCode(HttpCode.OK)
-                httpCode(HttpCode.NOT_FOUND)
+                httpCode(HttpStatus.OK)
+                httpCode(HttpStatus.NOT_FOUND)
             },
         )
 
@@ -72,11 +75,14 @@ object TrackController {
             behaviorOf = { ctx ->
                 val input = json.decodeFromString<Track.LogoutInput>(ctx.body())
                 logger.debug { "tracker logout $input" }
-                ctx.future(future { Track.logout(input) })
+                ctx.future {
+                    future { Track.logout(input) }
+                        .thenApply { ctx.status(HttpStatus.OK) }
+                }
             },
             withResults = {
-                httpCode(HttpCode.OK)
-                httpCode(HttpCode.NOT_FOUND)
+                httpCode(HttpStatus.OK)
+                httpCode(HttpStatus.NOT_FOUND)
             },
         )
 
@@ -92,11 +98,14 @@ object TrackController {
             behaviorOf = { ctx ->
                 val input = json.decodeFromString<Track.SearchInput>(ctx.body())
                 logger.debug { "tracker search $input" }
-                ctx.future(future { Track.search(input) })
+                ctx.future {
+                    future { Track.search(input) }
+                        .thenApply { ctx.json(it) }
+                }
             },
             withResults = {
-                httpCode(HttpCode.OK)
-                httpCode(HttpCode.NOT_FOUND)
+                httpCode(HttpStatus.OK)
+                httpCode(HttpStatus.NOT_FOUND)
             },
         )
 
@@ -112,10 +121,13 @@ object TrackController {
                 }
             },
             behaviorOf = { ctx, mangaId, trackerId, remoteId ->
-                ctx.future(future { Track.bind(mangaId, trackerId, remoteId.toLong()) })
+                ctx.future {
+                    future { Track.bind(mangaId, trackerId, remoteId.toLong()) }
+                        .thenApply { ctx.status(HttpStatus.OK) }
+                }
             },
             withResults = {
-                httpCode(HttpCode.OK)
+                httpCode(HttpStatus.OK)
             },
         )
 
@@ -131,10 +143,13 @@ object TrackController {
             behaviorOf = { ctx ->
                 val input = json.decodeFromString<Track.UpdateInput>(ctx.body())
                 logger.debug { "tracker update $input" }
-                ctx.future(future { Track.update(input) })
+                ctx.future {
+                    future { Track.update(input) }
+                        .thenApply { ctx.status(HttpStatus.OK) }
+                }
             },
             withResults = {
-                httpCode(HttpCode.OK)
+                httpCode(HttpStatus.OK)
             },
         )
 
@@ -148,19 +163,19 @@ object TrackController {
                 }
             },
             behaviorOf = { ctx, trackerId ->
-                ctx.future(
+                ctx.future {
                     future { Track.getTrackerThumbnail(trackerId) }
                         .thenApply {
                             ctx.header("content-type", it.second)
                             val httpCacheSeconds = 1.days.inWholeSeconds
                             ctx.header("cache-control", "max-age=$httpCacheSeconds")
-                            it.first
-                        },
-                )
+                            ctx.result(it.first)
+                        }
+                }
             },
             withResults = {
-                image(HttpCode.OK)
-                httpCode(HttpCode.NOT_FOUND)
+                image(HttpStatus.OK)
+                httpCode(HttpStatus.NOT_FOUND)
             },
         )
 }
diff --git a/server/src/main/kotlin/suwayomi/tachidesk/manga/controller/UpdateController.kt b/server/src/main/kotlin/suwayomi/tachidesk/manga/controller/UpdateController.kt
index 9083af32..d7869a90 100644
--- a/server/src/main/kotlin/suwayomi/tachidesk/manga/controller/UpdateController.kt
+++ b/server/src/main/kotlin/suwayomi/tachidesk/manga/controller/UpdateController.kt
@@ -1,6 +1,6 @@
 package suwayomi.tachidesk.manga.controller
 
-import io.javalin.http.HttpCode
+import io.javalin.http.HttpStatus
 import io.javalin.websocket.WsConfig
 import mu.KotlinLogging
 import suwayomi.tachidesk.manga.impl.Category
@@ -39,14 +39,14 @@ object UpdateController {
                 }
             },
             behaviorOf = { ctx, pageNum ->
-                ctx.future(
+                ctx.future {
                     future {
                         Chapter.getRecentChapters(pageNum)
-                    },
-                )
+                    }.thenApply { ctx.json(it) }
+                }
             },
             withResults = {
-                json<PagedMangaChapterListDataClass>(HttpCode.OK)
+                json<PagedMangaChapterListDataClass>(HttpStatus.OK)
             },
         )
 
@@ -84,13 +84,13 @@ object UpdateController {
                         )
                     } else {
                         logger.info { "No Category found" }
-                        ctx.status(HttpCode.BAD_REQUEST)
+                        ctx.status(HttpStatus.BAD_REQUEST)
                     }
                 }
             },
             withResults = {
-                httpCode(HttpCode.OK)
-                httpCode(HttpCode.BAD_REQUEST)
+                httpCode(HttpStatus.OK)
+                httpCode(HttpStatus.BAD_REQUEST)
             },
         )
 
@@ -119,7 +119,7 @@ object UpdateController {
                 ctx.json(updater.statusDeprecated.value)
             },
             withResults = {
-                json<UpdateStatus>(HttpCode.OK)
+                json<UpdateStatus>(HttpStatus.OK)
             },
         )
 
@@ -134,16 +134,16 @@ object UpdateController {
             behaviorOf = { ctx ->
                 val updater = Injekt.get<IUpdater>()
                 logger.info { "Resetting Updater" }
-                ctx.future(
+                ctx.future {
                     future {
                         updater.reset()
                     }.thenApply {
-                        ctx.status(HttpCode.OK)
-                    },
-                )
+                        ctx.status(HttpStatus.OK)
+                    }
+                }
             },
             withResults = {
-                httpCode(HttpCode.OK)
+                httpCode(HttpStatus.OK)
             },
         )
 }
diff --git a/server/src/main/kotlin/suwayomi/tachidesk/manga/impl/Chapter.kt b/server/src/main/kotlin/suwayomi/tachidesk/manga/impl/Chapter.kt
index 1e906b69..099395bc 100644
--- a/server/src/main/kotlin/suwayomi/tachidesk/manga/impl/Chapter.kt
+++ b/server/src/main/kotlin/suwayomi/tachidesk/manga/impl/Chapter.kt
@@ -7,13 +7,12 @@ package suwayomi.tachidesk.manga.impl
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at https://mozilla.org/MPL/2.0/. */
 
-import com.google.common.cache.Cache
-import com.google.common.cache.CacheBuilder
 import eu.kanade.tachiyomi.source.model.SChapter
 import eu.kanade.tachiyomi.source.model.SManga
 import eu.kanade.tachiyomi.source.online.HttpSource
 import eu.kanade.tachiyomi.util.chapter.ChapterRecognition
 import eu.kanade.tachiyomi.util.chapter.ChapterSanitizer.sanitize
+import io.github.reactivecircus.cache4k.Cache
 import kotlinx.coroutines.sync.Mutex
 import kotlinx.coroutines.sync.withLock
 import kotlinx.serialization.Serializable
@@ -47,8 +46,8 @@ import suwayomi.tachidesk.manga.model.table.toDataClass
 import suwayomi.tachidesk.server.serverConfig
 import java.time.Instant
 import java.util.TreeSet
-import java.util.concurrent.TimeUnit
 import kotlin.math.max
+import kotlin.time.Duration.Companion.minutes
 
 private fun List<ChapterDataClass>.removeDuplicates(currentChapter: ChapterDataClass): List<ChapterDataClass> =
     groupBy { it.chapterNumber }
@@ -124,9 +123,9 @@ object Chapter {
     }
 
     val map: Cache<Int, Mutex> =
-        CacheBuilder
-            .newBuilder()
-            .expireAfterAccess(10, TimeUnit.MINUTES)
+        Cache
+            .Builder<Int, Mutex>()
+            .expireAfterAccess(10.minutes)
             .build()
 
     suspend fun fetchChapterList(mangaId: Int): List<SChapter> {
diff --git a/server/src/main/kotlin/suwayomi/tachidesk/manga/impl/Manga.kt b/server/src/main/kotlin/suwayomi/tachidesk/manga/impl/Manga.kt
index 289f5575..3f1d71a7 100644
--- a/server/src/main/kotlin/suwayomi/tachidesk/manga/impl/Manga.kt
+++ b/server/src/main/kotlin/suwayomi/tachidesk/manga/impl/Manga.kt
@@ -15,7 +15,7 @@ import eu.kanade.tachiyomi.source.local.LocalSource
 import eu.kanade.tachiyomi.source.model.SManga
 import eu.kanade.tachiyomi.source.model.UpdateStrategy
 import eu.kanade.tachiyomi.source.online.HttpSource
-import io.javalin.http.HttpCode
+import io.javalin.http.HttpStatus
 import mu.KLogger
 import mu.KotlinLogging
 import okhttp3.CacheControl
@@ -305,9 +305,9 @@ object Manga {
             val tryToRefreshUrl =
                 !refreshUrl &&
                     listOf(
-                        HttpCode.GONE.status,
-                        HttpCode.MOVED_PERMANENTLY.status,
-                        HttpCode.NOT_FOUND.status,
+                        HttpStatus.GONE.code,
+                        HttpStatus.MOVED_PERMANENTLY.code,
+                        HttpStatus.NOT_FOUND.code,
                         523, // (Cloudflare) Origin Is Unreachable
                         522, // (Cloudflare) Connection timed out
                     ).contains(e.code)
diff --git a/server/src/main/kotlin/suwayomi/tachidesk/manga/impl/Search.kt b/server/src/main/kotlin/suwayomi/tachidesk/manga/impl/Search.kt
index a9bde717..9ab51dbc 100644
--- a/server/src/main/kotlin/suwayomi/tachidesk/manga/impl/Search.kt
+++ b/server/src/main/kotlin/suwayomi/tachidesk/manga/impl/Search.kt
@@ -10,7 +10,8 @@ package suwayomi.tachidesk.manga.impl
 import eu.kanade.tachiyomi.source.CatalogueSource
 import eu.kanade.tachiyomi.source.model.Filter
 import eu.kanade.tachiyomi.source.model.FilterList
-import io.javalin.plugin.json.JsonMapper
+import io.javalin.json.JsonMapper
+import io.javalin.json.fromJsonString
 import kotlinx.serialization.Serializable
 import suwayomi.tachidesk.manga.impl.MangaList.processEntries
 import suwayomi.tachidesk.manga.impl.util.source.GetCatalogueSource.getCatalogueSourceOrStub
@@ -129,7 +130,7 @@ object Search {
                 is Filter.CheckBox -> filter.state = change.state.toBooleanStrict()
                 is Filter.TriState -> filter.state = change.state.toInt()
                 is Filter.Group<*> -> {
-                    val groupChange = jsonMapper.fromJsonString(change.state, FilterChange::class.java)
+                    val groupChange = jsonMapper.fromJsonString<FilterChange>(change.state)
 
                     when (val groupFilter = filter.state[groupChange.position]) {
                         is Filter.CheckBox -> groupFilter.state = groupChange.state.toBooleanStrict()
diff --git a/server/src/main/kotlin/suwayomi/tachidesk/manga/impl/Source.kt b/server/src/main/kotlin/suwayomi/tachidesk/manga/impl/Source.kt
index 063d1733..226718ad 100644
--- a/server/src/main/kotlin/suwayomi/tachidesk/manga/impl/Source.kt
+++ b/server/src/main/kotlin/suwayomi/tachidesk/manga/impl/Source.kt
@@ -11,7 +11,8 @@ import androidx.preference.Preference
 import androidx.preference.PreferenceScreen
 import eu.kanade.tachiyomi.source.ConfigurableSource
 import eu.kanade.tachiyomi.source.sourcePreferences
-import io.javalin.plugin.json.JsonMapper
+import io.javalin.json.JsonMapper
+import io.javalin.json.fromJsonString
 import mu.KotlinLogging
 import org.jetbrains.exposed.sql.and
 import org.jetbrains.exposed.sql.insert
@@ -131,11 +132,10 @@ object Source {
         value: String,
         getValue: (Preference) -> Any = { pref ->
             println(jsonMapper::class.java.name)
-            @Suppress("UNCHECKED_CAST")
             when (pref.defaultValueType) {
                 "String" -> value
                 "Boolean" -> value.toBoolean()
-                "Set<String>" -> jsonMapper.fromJsonString(value, List::class.java as Class<List<String>>).toSet()
+                "Set<String>" -> jsonMapper.fromJsonString<List<String>>(value).toSet()
                 else -> throw RuntimeException("Unsupported type conversion")
             }
         },
diff --git a/server/src/main/kotlin/suwayomi/tachidesk/manga/impl/download/DownloadManager.kt b/server/src/main/kotlin/suwayomi/tachidesk/manga/impl/download/DownloadManager.kt
index 9275b40b..38a676c2 100644
--- a/server/src/main/kotlin/suwayomi/tachidesk/manga/impl/download/DownloadManager.kt
+++ b/server/src/main/kotlin/suwayomi/tachidesk/manga/impl/download/DownloadManager.kt
@@ -104,11 +104,11 @@ object DownloadManager {
     }
 
     fun addClient(ctx: WsContext) {
-        clients[ctx.sessionId] = ctx
+        clients[ctx.sessionId()] = ctx
     }
 
     fun removeClient(ctx: WsContext) {
-        clients.remove(ctx.sessionId)
+        clients.remove(ctx.sessionId())
     }
 
     fun notifyClient(ctx: WsContext) {
diff --git a/server/src/main/kotlin/suwayomi/tachidesk/manga/impl/update/UpdaterSocket.kt b/server/src/main/kotlin/suwayomi/tachidesk/manga/impl/update/UpdaterSocket.kt
index a7af9144..ca333f4a 100644
--- a/server/src/main/kotlin/suwayomi/tachidesk/manga/impl/update/UpdaterSocket.kt
+++ b/server/src/main/kotlin/suwayomi/tachidesk/manga/impl/update/UpdaterSocket.kt
@@ -41,7 +41,7 @@ object UpdaterSocket : Websocket<UpdateStatus>() {
     }
 
     override fun addClient(ctx: WsContext) {
-        logger.info { ctx.sessionId }
+        logger.info { ctx.sessionId() }
         super.addClient(ctx)
         if (job?.isActive != true) {
             job = start()
diff --git a/server/src/main/kotlin/suwayomi/tachidesk/manga/impl/update/Websocket.kt b/server/src/main/kotlin/suwayomi/tachidesk/manga/impl/update/Websocket.kt
index 940920a4..b3e4d2ea 100644
--- a/server/src/main/kotlin/suwayomi/tachidesk/manga/impl/update/Websocket.kt
+++ b/server/src/main/kotlin/suwayomi/tachidesk/manga/impl/update/Websocket.kt
@@ -8,12 +8,12 @@ abstract class Websocket<T> {
     protected val clients = ConcurrentHashMap<String, WsContext>()
 
     open fun addClient(ctx: WsContext) {
-        clients[ctx.sessionId] = ctx
+        clients[ctx.sessionId()] = ctx
         notifyClient(ctx, null)
     }
 
     open fun removeClient(ctx: WsContext) {
-        clients.remove(ctx.sessionId)
+        clients.remove(ctx.sessionId())
     }
 
     open fun notifyAllClients(value: T) {
diff --git a/server/src/main/kotlin/suwayomi/tachidesk/server/JavalinSetup.kt b/server/src/main/kotlin/suwayomi/tachidesk/server/JavalinSetup.kt
index bc1cf0ec..ffb107df 100644
--- a/server/src/main/kotlin/suwayomi/tachidesk/server/JavalinSetup.kt
+++ b/server/src/main/kotlin/suwayomi/tachidesk/server/JavalinSetup.kt
@@ -9,12 +9,8 @@ package suwayomi.tachidesk.server
 
 import io.javalin.Javalin
 import io.javalin.apibuilder.ApiBuilder.path
-import io.javalin.core.security.RouteRole
+import io.javalin.http.UnauthorizedResponse
 import io.javalin.http.staticfiles.Location
-import io.javalin.plugin.openapi.OpenApiOptions
-import io.javalin.plugin.openapi.OpenApiPlugin
-import io.javalin.plugin.openapi.ui.SwaggerOptions
-import io.swagger.v3.oas.models.info.Info
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.SupervisorJob
@@ -22,7 +18,6 @@ import kotlinx.coroutines.flow.combine
 import kotlinx.coroutines.future.future
 import kotlinx.coroutines.runBlocking
 import mu.KotlinLogging
-import org.eclipse.jetty.server.Server
 import org.eclipse.jetty.server.ServerConnector
 import suwayomi.tachidesk.global.GlobalAPI
 import suwayomi.tachidesk.graphql.GraphQL
@@ -31,9 +26,7 @@ import suwayomi.tachidesk.server.util.Browser
 import suwayomi.tachidesk.server.util.WebInterfaceManager
 import uy.kohesive.injekt.injectLazy
 import java.io.IOException
-import java.lang.IllegalArgumentException
 import java.util.concurrent.CompletableFuture
-import kotlin.NoSuchElementException
 import kotlin.concurrent.thread
 
 object JavalinSetup {
@@ -46,31 +39,11 @@ object JavalinSetup {
     fun <T> future(block: suspend CoroutineScope.() -> T): CompletableFuture<T> = scope.future(block = block)
 
     fun javalinSetup() {
-        val server = Server()
-        val connector =
-            ServerConnector(server).apply {
-                host = serverConfig.ip.value
-                port = serverConfig.port.value
-            }
-        server.addConnector(connector)
-
-        serverConfig.subscribeTo(combine(serverConfig.ip, serverConfig.port) { ip, port -> Pair(ip, port) }, { (newIp, newPort) ->
-            val oldIp = connector.host
-            val oldPort = connector.port
-
-            connector.host = newIp
-            connector.port = newPort
-            connector.stop()
-            connector.start()
-
-            logger.info { "Server ip and/or port changed from $oldIp:$oldPort to $newIp:$newPort " }
-        })
-
         val app =
             Javalin.create { config ->
                 if (serverConfig.webUIEnabled.value) {
                     val serveWebUI = {
-                        config.addSinglePageRoot("/", applicationDirs.webUIRoot + "/index.html", Location.EXTERNAL)
+                        config.spaRoot.addFile("/root", applicationDirs.webUIRoot + "/index.html", Location.EXTERNAL)
                     }
                     WebInterfaceManager.setServeWebUI(serveWebUI)
 
@@ -79,31 +52,74 @@ object JavalinSetup {
                     }
 
                     logger.info { "Serving web static files for ${serverConfig.webUIFlavor.value}" }
-                    config.addStaticFiles(applicationDirs.webUIRoot, Location.EXTERNAL)
+                    config.staticFiles.add(applicationDirs.webUIRoot, Location.EXTERNAL)
                     serveWebUI()
 
-                    config.registerPlugin(OpenApiPlugin(getOpenApiOptions()))
+                    // config.registerPlugin(OpenApiPlugin(getOpenApiOptions()))
                 }
 
-                config.server { server }
+                var connectorAdded = false
+                config.jetty.modifyServer { server ->
+                    if (!connectorAdded) {
+                        val connector =
+                            ServerConnector(server).apply {
+                                host = serverConfig.ip.value
+                                port = serverConfig.port.value
+                            }
+                        server.addConnector(connector)
 
-                config.enableCorsForAllOrigins()
+                        serverConfig.subscribeTo(
+                            combine(
+                                serverConfig.ip,
+                                serverConfig.port,
+                            ) { ip, port -> Pair(ip, port) },
+                            { (newIp, newPort) ->
+                                val oldIp = connector.host
+                                val oldPort = connector.port
 
-                config.accessManager { handler, ctx, _ ->
-                    fun credentialsValid(): Boolean {
-                        val (username, password) = ctx.basicAuthCredentials()
-                        return username == serverConfig.basicAuthUsername.value && password == serverConfig.basicAuthPassword.value
+                                connector.host = newIp
+                                connector.port = newPort
+                                connector.stop()
+                                connector.start()
+
+                                logger.info { "Server ip and/or port changed from $oldIp:$oldPort to $newIp:$newPort " }
+                            },
+                        )
+                        connectorAdded = true
                     }
+                }
 
-                    if (serverConfig.basicAuthEnabled.value && !(ctx.basicAuthCredentialsExist() && credentialsValid())) {
-                        ctx.header("WWW-Authenticate", "Basic")
-                        ctx.status(401).json("Unauthorized")
-                    } else {
-                        handler.handle(ctx)
+                config.bundledPlugins.enableCors { cors ->
+                    cors.addRule {
+                        it.anyHost()
+                    }
+                }
+
+                config.router.apiBuilder {
+                    path("api/") {
+                        path("v1/") {
+                            GlobalAPI.defineEndpoints()
+                            MangaAPI.defineEndpoints()
+                        }
+                        GraphQL.defineEndpoints()
                     }
                 }
             }
 
+        app.beforeMatched { ctx ->
+            fun credentialsValid(): Boolean {
+                val basicAuthCredentials = ctx.basicAuthCredentials() ?: return true
+                val (username, password) = basicAuthCredentials
+                return username == serverConfig.basicAuthUsername.value &&
+                    password == serverConfig.basicAuthPassword.value
+            }
+
+            if (serverConfig.basicAuthEnabled.value && !credentialsValid()) {
+                ctx.header("WWW-Authenticate", "Basic")
+                throw UnauthorizedResponse()
+            }
+        }
+
         app.events { event ->
             event.serverStarted {
                 if (serverConfig.initialOpenInBrowserEnabled.value) {
@@ -139,36 +155,22 @@ object JavalinSetup {
             ctx.result(e.message ?: "Bad Request")
         }
 
-        app.routes {
-            path("api/") {
-                path("v1/") {
-                    GlobalAPI.defineEndpoints()
-                    MangaAPI.defineEndpoints()
-                }
-                GraphQL.defineEndpoints()
-            }
-        }
-
         app.start()
     }
 
-    private fun getOpenApiOptions(): OpenApiOptions {
-        val applicationInfo =
-            Info().apply {
-                version("1.0")
-                description("Suwayomi-Server Api")
-            }
-        return OpenApiOptions(applicationInfo).apply {
-            path("/api/openapi.json")
-            swagger(
-                SwaggerOptions("/api/swagger-ui").apply {
-                    title("Suwayomi-Server Swagger Documentation")
-                },
-            )
-        }
-    }
-
-    object Auth {
-        enum class Role : RouteRole { ANYONE, USER_READ, USER_WRITE }
-    }
+    // private fun getOpenApiOptions(): OpenApiOptions {
+    //     val applicationInfo =
+    //         Info().apply {
+    //             version("1.0")
+    //             description("Suwayomi-Server Api")
+    //         }
+    //     return OpenApiOptions(applicationInfo).apply {
+    //         path("/api/openapi.json")
+    //         swagger(
+    //             SwaggerOptions("/api/swagger-ui").apply {
+    //                 title("Suwayomi-Server Swagger Documentation")
+    //             },
+    //         )
+    //     }
+    // }
 }
diff --git a/server/src/main/kotlin/suwayomi/tachidesk/server/ServerSetup.kt b/server/src/main/kotlin/suwayomi/tachidesk/server/ServerSetup.kt
index ac615b0d..37999abc 100644
--- a/server/src/main/kotlin/suwayomi/tachidesk/server/ServerSetup.kt
+++ b/server/src/main/kotlin/suwayomi/tachidesk/server/ServerSetup.kt
@@ -13,8 +13,8 @@ import eu.kanade.tachiyomi.App
 import eu.kanade.tachiyomi.createAppModule
 import eu.kanade.tachiyomi.network.NetworkHelper
 import eu.kanade.tachiyomi.source.local.LocalSource
-import io.javalin.plugin.json.JavalinJackson
-import io.javalin.plugin.json.JsonMapper
+import io.javalin.json.JavalinJackson
+import io.javalin.json.JsonMapper
 import kotlinx.coroutines.flow.MutableStateFlow
 import kotlinx.coroutines.flow.combine
 import kotlinx.coroutines.flow.distinctUntilChanged
@@ -237,9 +237,7 @@ fun applicationSetup() {
     runMigrations(applicationDirs)
 
     // Disable jetty's logging
-    System.setProperty("org.eclipse.jetty.util.log.announce", "false")
-    System.setProperty("org.eclipse.jetty.util.log.class", "org.eclipse.jetty.util.log.StdErrLog")
-    System.setProperty("org.eclipse.jetty.LEVEL", "OFF")
+    setLogLevelFor("org.eclipse.jetty", Level.OFF)
 
     // socks proxy settings
     serverConfig.subscribeTo(
diff --git a/server/src/main/kotlin/suwayomi/tachidesk/server/util/AppMutex.kt b/server/src/main/kotlin/suwayomi/tachidesk/server/util/AppMutex.kt
index 9f13406b..aa7eff3e 100644
--- a/server/src/main/kotlin/suwayomi/tachidesk/server/util/AppMutex.kt
+++ b/server/src/main/kotlin/suwayomi/tachidesk/server/util/AppMutex.kt
@@ -7,7 +7,8 @@ package suwayomi.tachidesk.server.util
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at https://mozilla.org/MPL/2.0/. */
 
-import io.javalin.plugin.json.JsonMapper
+import io.javalin.json.JsonMapper
+import io.javalin.json.fromJsonString
 import mu.KotlinLogging
 import okhttp3.OkHttpClient
 import okhttp3.Request.Builder
@@ -59,7 +60,7 @@ object AppMutex {
             }
 
         return try {
-            jsonMapper.fromJsonString(response, AboutDataClass::class.java)
+            jsonMapper.fromJsonString<AboutDataClass>(response)
             AppMutexState.TachideskInstanceRunning
         } catch (e: IOException) {
             AppMutexState.OtherApplicationRunning
diff --git a/server/src/main/kotlin/suwayomi/tachidesk/server/util/DocumentationDsl.kt b/server/src/main/kotlin/suwayomi/tachidesk/server/util/DocumentationDsl.kt
index db082052..9d847d0f 100644
--- a/server/src/main/kotlin/suwayomi/tachidesk/server/util/DocumentationDsl.kt
+++ b/server/src/main/kotlin/suwayomi/tachidesk/server/util/DocumentationDsl.kt
@@ -1,11 +1,8 @@
 package suwayomi.tachidesk.server.util
 
 import io.javalin.http.Context
-import io.javalin.http.HttpCode
-import io.javalin.plugin.openapi.dsl.DocumentedHandler
-import io.javalin.plugin.openapi.dsl.OpenApiDocumentation
-import io.javalin.plugin.openapi.dsl.documented
-import io.swagger.v3.oas.models.Operation
+import io.javalin.http.Handler
+import io.javalin.http.HttpStatus
 
 fun <T> getSimpleParamItem(
     ctx: Context,
@@ -160,30 +157,30 @@ sealed class Param<T> {
 class ResultsBuilder {
     val results = mutableListOf<ResultType>()
 
-    inline fun <reified T> json(code: HttpCode) {
+    inline fun <reified T> json(code: HttpStatus) {
         results += ResultType.MimeType(code, "application/json", T::class.java)
     }
 
-    fun plainText(code: HttpCode) {
+    fun plainText(code: HttpStatus) {
         results += ResultType.MimeType(code, "text/plain", String::class.java)
     }
 
-    fun image(code: HttpCode) {
+    fun image(code: HttpStatus) {
         results += ResultType.MimeType(code, "image/*", ByteArray::class.java)
     }
 
-    fun stream(code: HttpCode) {
+    fun stream(code: HttpStatus) {
         results += ResultType.MimeType(code, "application/octet-stream", ByteArray::class.java)
     }
 
     inline fun <reified T> mime(
-        code: HttpCode,
+        code: HttpStatus,
         mime: String,
     ) {
         results += ResultType.MimeType(code, mime, T::class.java)
     }
 
-    fun httpCode(code: HttpCode) {
+    fun httpCode(code: HttpStatus) {
         results += ResultType.StatusCode(code)
     }
 }
@@ -192,20 +189,20 @@ sealed class ResultType {
     abstract fun applyTo(documentation: OpenApiDocumentation)
 
     data class MimeType(
-        val code: HttpCode,
+        val code: HttpStatus,
         val mime: String,
         private val clazz: Class<*>,
     ) : ResultType() {
         override fun applyTo(documentation: OpenApiDocumentation) {
-            documentation.result(code.status.toString(), clazz, mime)
+            documentation.result(code.code.toString(), clazz, mime)
         }
     }
 
     data class StatusCode(
-        val code: HttpCode,
+        val code: HttpStatus,
     ) : ResultType() {
         override fun applyTo(documentation: OpenApiDocumentation) {
-            documentation.result<Unit>(code.status.toString())
+            documentation.result<Unit>(code.code.toString())
         }
     }
 }
@@ -576,3 +573,67 @@ inline fun <
             )
         },
     )
+
+@Suppress("UNUSED")
+class OpenApiDocumentation {
+    fun operation(block: Operation.() -> Unit) {}
+
+    fun result(
+        toString: Any,
+        clazz: Class<*>,
+        mime: String,
+    ) {
+    }
+
+    fun <T> result(toString: Any) {
+    }
+
+    fun <T> formParam(
+        key: String,
+        defaultValue: T? = null,
+        isRequired: Boolean = false,
+    ) {}
+
+    fun <T> queryParam(
+        key: String,
+        defaultValue: T? = null,
+        isRepeatable: Boolean = false,
+    ) {}
+
+    fun <T> pathParam(
+        key: String,
+        defaultValue: T? = null,
+    ) {}
+
+    fun <T> body() {}
+
+    fun uploadedFile(
+        name: String,
+        block: (DocumentationFile) -> Unit,
+    ) {}
+}
+
+class DocumentationFile {
+    fun description(string: String) {}
+
+    fun required(boolean: Boolean) {}
+}
+
+class DocumentedHandler(
+    private val handler: (ctx: Context) -> Unit,
+) : Handler {
+    override fun handle(ctx: Context) {
+        handler(ctx)
+    }
+}
+
+fun documented(
+    documentation: OpenApiDocumentation,
+    handle: (ctx: Context) -> Unit,
+): DocumentedHandler = DocumentedHandler(handle)
+
+class Operation {
+    fun summary(string: String) {}
+
+    fun description(string: String) {}
+}
diff --git a/server/src/test/kotlin/suwayomi/tachidesk/manga/controller/UpdateControllerTest.kt b/server/src/test/kotlin/suwayomi/tachidesk/manga/controller/UpdateControllerTest.kt
index b2af8d1f..919a66d2 100644
--- a/server/src/test/kotlin/suwayomi/tachidesk/manga/controller/UpdateControllerTest.kt
+++ b/server/src/test/kotlin/suwayomi/tachidesk/manga/controller/UpdateControllerTest.kt
@@ -3,7 +3,7 @@ package suwayomi.tachidesk.manga.controller
 import suwayomi.tachidesk.test.ApplicationTest
 
 // import io.javalin.http.Context
-// import io.javalin.http.HttpCode
+// import io.javalin.http.HttpStatus
 // import io.mockk.every
 // import io.mockk.mockk
 // import io.mockk.verify
@@ -31,7 +31,7 @@ internal class UpdateControllerTest : ApplicationTest() {
 //     fun `POST non existent Category Id should give error`() {
 //         every { ctx.formParam("category") } returns "1"
 //         UpdateController.categoryUpdate(ctx)
-//         verify { ctx.status(HttpCode.BAD_REQUEST) }
+//         verify { ctx.status(HttpStatus.BAD_REQUEST) }
 //         val updater by DI.global.instance<IUpdater>()
 //         assertEquals(0, updater.status.value.numberOfJobs)
 //     }
@@ -43,7 +43,7 @@ internal class UpdateControllerTest : ApplicationTest() {
 //         CategoryManga.addMangaToCategory(1, 1)
 //         every { ctx.formParam("category") } returns "1"
 //         UpdateController.categoryUpdate(ctx)
-//         verify { ctx.status(HttpCode.OK) }
+//         verify { ctx.status(HttpStatus.OK) }
 //         val updater by DI.global.instance<IUpdater>()
 //         assertEquals(1, updater.status.value.numberOfJobs)
 //     }
@@ -59,7 +59,7 @@ internal class UpdateControllerTest : ApplicationTest() {
 //         createLibraryManga("mangaInDefault")
 //         every { ctx.formParam("category") } returns null
 //         UpdateController.categoryUpdate(ctx)
-//         verify { ctx.status(HttpCode.OK) }
+//         verify { ctx.status(HttpStatus.OK) }
 //         val updater by DI.global.instance<IUpdater>()
 //         assertEquals(3, updater.status.value.numberOfJobs)
 //     }