diff --git a/src/Unreal.Core/Models/Enums/NetworkVersionHistory.cs b/src/Unreal.Core/Models/Enums/NetworkVersionHistory.cs
index be626ba..88fd3cd 100644
--- a/src/Unreal.Core/Models/Enums/NetworkVersionHistory.cs
+++ b/src/Unreal.Core/Models/Enums/NetworkVersionHistory.cs
@@ -23,6 +23,7 @@ public enum NetworkVersionHistory
         HISTORY_GUIDCACHE_CHECKSUMS = 16,           // Removing guid export checksums from saved data, they are ignored during playback
         HISTORY_SAVE_PACKAGE_VERSION_UE = 17,		// Save engine and licensee package version as well, in case serialization functions need them for compatibility
         HISTORY_RECORDING_METADATA = 18,			// Adding additional record-time information to the header
+        HISTORY_USE_CUSTOM_VERSION = 19,				// Serializing replay and network versions as custom verions going forward
 
         HISTORY_NETWORKVERSION_PLUS_ONE,
         LATEST = HISTORY_NETWORKVERSION_PLUS_ONE - 1,
diff --git a/src/Unreal.Core/Models/Enums/ReplayVersionHistory.cs b/src/Unreal.Core/Models/Enums/ReplayVersionHistory.cs
index e348ef3..eb3c2ba 100644
--- a/src/Unreal.Core/Models/Enums/ReplayVersionHistory.cs
+++ b/src/Unreal.Core/Models/Enums/ReplayVersionHistory.cs
@@ -13,6 +13,7 @@ public enum ReplayVersionHistory : uint
         HISTORY_STREAM_CHUNK_TIMES = 4,
         HISTORY_FRIENDLY_NAME_ENCODING = 5,
         HISTORY_ENCRYPTION = 6,
+        HISTORY_2500 = 7, // TODO, FIND THE NAME OF THIS
 
         HISTORY_PLUS_ONE,
         LATEST = HISTORY_PLUS_ONE - 1
diff --git a/src/Unreal.Core/ReplayReader.cs b/src/Unreal.Core/ReplayReader.cs
index 4e257ae..8fbc363 100644
--- a/src/Unreal.Core/ReplayReader.cs
+++ b/src/Unreal.Core/ReplayReader.cs
@@ -410,7 +410,14 @@ public virtual void ReadReplayHeader(FArchive archive)
                 _logger?.LogError("Header.Version < MIN_NETWORK_DEMO_VERSION. Header.Version: {}, MIN_NETWORK_DEMO_VERSION: {}", header.NetworkVersion, NetworkVersionHistory.HISTORY_EXTRA_VERSION);
                 throw new InvalidReplayException($"Header.Version < MIN_NETWORK_DEMO_VERSION. Header.Version: {header.NetworkVersion}, MIN_NETWORK_DEMO_VERSION: {NetworkVersionHistory.HISTORY_EXTRA_VERSION}");
             }
+            if (header.NetworkVersion >= NetworkVersionHistory.HISTORY_USE_CUSTOM_VERSION)
+            {
+                var customVersionCount = archive.ReadInt32();
 
+                // version guid -> 16 bytes
+                // version -> 4 bytes
+                archive.SkipBytes(customVersionCount * 20);
+            }
             header.NetworkChecksum = archive.ReadUInt32();
             header.EngineNetworkVersion = archive.ReadUInt32AsEnum<EngineNetworkVersionHistory>();
 
@@ -524,7 +531,14 @@ public virtual void ReadReplayInfo(FArchive archive)
             {
                 _logger?.LogWarning("Found unexpected ReplayVersionHistory: {}", fileVersion);
             }
+            if (archive.ReplayVersion == ReplayVersionHistory.HISTORY_2500)
+            {
+                var customVersionCount = archive.ReadInt32();
 
+                // version guid -> 16 bytes
+                // version -> 4 bytes
+                archive.SkipBytes(customVersionCount * 20);
+            }
             var info = new ReplayInfo()
             {
                 FileVersion = fileVersion,