diff --git a/Engine/source/app/version.h b/Engine/source/app/version.h
index d9d0a859d..937ecc274 100644
--- a/Engine/source/app/version.h
+++ b/Engine/source/app/version.h
@@ -44,7 +44,7 @@
 #define TORQUE_GAME_ENGINE          4000
 
 /// Human readable engine version string.
-#define TORQUE_GAME_ENGINE_VERSION_STRING  "3.9.0"
+#define TORQUE_GAME_ENGINE_VERSION_STRING  "4.0.0"
 
 /// Gets the engine version number.  The version number is specified as a global in version.cc
 U32 getVersionNumber();