diff --git a/heat/version.py b/heat/version.py
index fa5af3d6dd..ff56185121 100644
--- a/heat/version.py
+++ b/heat/version.py
@@ -20,7 +20,7 @@ except ImportError:
                     'revision_id': 'LOCALREVISION',
                     'revno': 0}
 
-HEAT_VERSION = ['3']
+HEAT_VERSION = ['4']
 REVISION = HEAT_VERSION
 
 FINAL = False   # This becomes true at Release Candidate time