diff --git a/distribution/changelog.txt b/distribution/changelog.txt
index d9ac406e96..a5e3216294 100644
--- a/distribution/changelog.txt
+++ b/distribution/changelog.txt
@@ -1,6 +1,7 @@
 0.4.27 (in development)
 ------------------------------------------------------------------------
 - Improved: [#2296, #2307] The land tool now takes sloped track and paths into account when modifying land.
+- Change: [#25161] Revert to the ‘fair ride price’ calculation of vanilla RCT2.
 - Fix: [#25131] The Reverse Freefall Coaster On-ride photo section track has incorrectly coloured ties.
 - Fix: [#25132] Crash when trying to use simulate on incomplete ride.
 - Fix: [#25134] Vehicles visually glitch on diagonal steep slopes.
diff --git a/src/openrct2/network/NetworkBase.cpp b/src/openrct2/network/NetworkBase.cpp
index 83363abfe4..94f8a8a146 100644
--- a/src/openrct2/network/NetworkBase.cpp
+++ b/src/openrct2/network/NetworkBase.cpp
@@ -47,7 +47,7 @@
 // It is used for making sure only compatible builds get connected, even within
 // single OpenRCT2 version.
 
-constexpr uint8_t kStreamVersion = 3;
+constexpr uint8_t kStreamVersion = 4;
 
 const std::string kStreamID = std::string(kOpenRCT2Version) + "-" + std::to_string(kStreamVersion);
 
diff --git a/src/openrct2/park/ParkFile.h b/src/openrct2/park/ParkFile.h
index a702d4e8fa..c3459b9cde 100644
--- a/src/openrct2/park/ParkFile.h
+++ b/src/openrct2/park/ParkFile.h
@@ -21,7 +21,7 @@ namespace OpenRCT2
     struct ObjectRepositoryItem;
 
     // Current version that is saved.
-    constexpr uint32_t kParkFileCurrentVersion = 57;
+    constexpr uint32_t kParkFileCurrentVersion = 58;
 
     // The minimum version that is forwards compatible with the current version.
     constexpr uint32_t kParkFileMinVersion = 57;
@@ -60,6 +60,7 @@ namespace OpenRCT2
     constexpr uint16_t kExtendedGoKartsVersion = 54;
     constexpr uint16_t kHigherInversionsHolesHelicesStatsVersion = 55;
     constexpr uint16_t kFixedObsoleteFootpathsVersion = 56;
+    constexpr uint16_t kRevertToVanillaFairRidePriceCalculation = 58;
 
     class ParkFileExporter
     {