diff --git a/CMakeLists.txt b/CMakeLists.txt
index a1f5baa2ec..a83d4b4f9a 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -65,9 +65,9 @@ set(OBJECTS_VERSION "1.2.1")
 set(OBJECTS_URL  "https://github.com/OpenRCT2/objects/releases/download/v${OBJECTS_VERSION}/objects.zip")
 set(OBJECTS_SHA1 "540e004abc683b3fe22211f5234e3d78ab023c5f")
 
-set(REPLAYS_VERSION "0.0.55")
+set(REPLAYS_VERSION "0.0.56")
 set(REPLAYS_URL  "https://github.com/OpenRCT2/replays/releases/download/v${REPLAYS_VERSION}/replays.zip")
-set(REPLAYS_SHA1 "70B4B7CB26A428801676BCC615F3881E72A45406")
+set(REPLAYS_SHA1 "C47048B71A95A95428A08035C94AD10E7A020D4D")
 
 option(FORCE32 "Force 32-bit build. It will add `-m32` to compiler flags.")
 option(WITH_TESTS "Build tests")
diff --git a/distribution/changelog.txt b/distribution/changelog.txt
index c921a159a9..32a5429977 100644
--- a/distribution/changelog.txt
+++ b/distribution/changelog.txt
@@ -38,6 +38,7 @@
 - Fix: [#15503] Freeze when doing specific coaster merges with block brakes.
 - Fix: [#15514] Two different “quit to menu” menu items are available in track designer and track design manager.
 - Fix: [#15560] Memory leak due to OpenGL Renderer not releasing a texture.
+- Fix: [#15567] Litter not being counted correctly during Park rating calculation (original bug).
 - Improved: [#3417] Crash dumps are now placed in their own folder.
 - Improved: [#13524] macOS arm64 native (universal) app
 - Improved: [#15538] Software rendering can now draw in parallel when Multithreading is enabled.
diff --git a/openrct2.proj b/openrct2.proj
index 0613112165..12aed214aa 100644
--- a/openrct2.proj
+++ b/openrct2.proj
@@ -48,8 +48,8 @@
     <TitleSequencesSha1>304d13a126c15bf2c86ff13b81a2f2cc1856ac8d</TitleSequencesSha1>
     <ObjectsUrl>https://github.com/OpenRCT2/objects/releases/download/v1.2.1/objects.zip</ObjectsUrl>
     <ObjectsSha1>540e004abc683b3fe22211f5234e3d78ab023c5f</ObjectsSha1>
-    <ReplaysUrl>https://github.com/OpenRCT2/replays/releases/download/v0.0.55/replays.zip</ReplaysUrl>
-    <ReplaysSha1>70B4B7CB26A428801676BCC615F3881E72A45406</ReplaysSha1>
+    <ReplaysUrl>https://github.com/OpenRCT2/replays/releases/download/v0.0.56/replays.zip</ReplaysUrl>
+    <ReplaysSha1>C47048B71A95A95428A08035C94AD10E7A020D4D</ReplaysSha1>
   </PropertyGroup>
 
   <ItemGroup>
diff --git a/src/openrct2/network/NetworkBase.cpp b/src/openrct2/network/NetworkBase.cpp
index 3b68f82cfc..6c79985b3f 100644
--- a/src/openrct2/network/NetworkBase.cpp
+++ b/src/openrct2/network/NetworkBase.cpp
@@ -40,7 +40,7 @@
 // This string specifies which version of network stream current build uses.
 // It is used for making sure only compatible builds get connected, even within
 // single OpenRCT2 version.
-#define NETWORK_STREAM_VERSION "13"
+#define NETWORK_STREAM_VERSION "14"
 #define NETWORK_STREAM_ID OPENRCT2_VERSION "-" NETWORK_STREAM_VERSION
 
 static Peep* _pickup_peep = nullptr;
diff --git a/src/openrct2/world/EntityList.h b/src/openrct2/world/EntityList.h
index 19489ae49b..60d967aac5 100644
--- a/src/openrct2/world/EntityList.h
+++ b/src/openrct2/world/EntityList.h
@@ -165,11 +165,11 @@ public:
     {
     }
 
-    EntityListIterator_t begin()
+    EntityListIterator_t begin() const
     {
         return EntityListIterator_t(std::cbegin(vec), std::cend(vec));
     }
-    EntityListIterator_t end()
+    EntityListIterator_t end() const
     {
         return EntityListIterator_t(std::cend(vec), std::cend(vec));
     }
diff --git a/src/openrct2/world/Litter.cpp b/src/openrct2/world/Litter.cpp
index 5f8ccba8d3..236f0150af 100644
--- a/src/openrct2/world/Litter.cpp
+++ b/src/openrct2/world/Litter.cpp
@@ -125,3 +125,8 @@ rct_string_id Litter::GetName() const
         return STR_NONE;
     return litterNames[EnumValue(SubType)];
 }
+
+uint32_t Litter::GetAge() const
+{
+    return gCurrentTicks - creationTick;
+}
diff --git a/src/openrct2/world/Litter.h b/src/openrct2/world/Litter.h
index 2aafcfeecf..52c8381f60 100644
--- a/src/openrct2/world/Litter.h
+++ b/src/openrct2/world/Litter.h
@@ -40,4 +40,5 @@ struct Litter : EntityBase
     static void RemoveAt(const CoordsXYZ& litterPos);
     void Serialise(DataSerialiser& stream);
     rct_string_id GetName() const;
+    uint32_t GetAge() const;
 };
diff --git a/src/openrct2/world/Park.cpp b/src/openrct2/world/Park.cpp
index c8ff39b4bd..ddcec0d235 100644
--- a/src/openrct2/world/Park.cpp
+++ b/src/openrct2/world/Park.cpp
@@ -463,15 +463,11 @@ int32_t Park::CalculateParkRating() const
 
     // Litter
     {
-        int32_t litterCount = 0;
-        for (auto litter : EntityList<Litter>())
-        {
-            // Ignore recently dropped litter
-            if (litter->creationTick - gCurrentTicks >= 7680)
-            {
-                litterCount++;
-            }
-        }
+        // Counts the amount of litter whose age is min. 7680 ticks (5~ min) old.
+        const auto litterList = EntityList<Litter>();
+        const auto litterCount = std::count_if(
+            litterList.begin(), litterList.end(), [](auto* litter) { return litter->GetAge() >= 7680; });
+
         result -= 600 - (4 * (150 - std::min<int32_t>(150, litterCount)));
     }