diff --git a/Source/Immutable/Public/Immutable/ImmutableDataTypes.h b/Source/Immutable/Public/Immutable/ImmutableDataTypes.h
index a6fc023..c1f2d83 100644
--- a/Source/Immutable/Public/Immutable/ImmutableDataTypes.h
+++ b/Source/Immutable/Public/Immutable/ImmutableDataTypes.h
@@ -8,7 +8,7 @@
 
 // This is the version of the Unreal Immutable SDK that is being used. This is not the version of the engine.
 // This hardcoded value will be updated by a workflow during the release process.
-#define ENGINE_SDK_VERSION TEXT("1.8.0")
+#define ENGINE_SDK_VERSION TEXT("1.9.0")
 
 USTRUCT()
 struct FImmutableEngineVersionData