diff --git a/nova/compute/rpcapi.py b/nova/compute/rpcapi.py
index 42fa2a95b922..531dbf0d8f6a 100644
--- a/nova/compute/rpcapi.py
+++ b/nova/compute/rpcapi.py
@@ -428,6 +428,7 @@ class ComputeAPI(object):
         'zed': '6.1',
         'antelope': '6.2',
         'bobcat': '6.2',
+        'caracal': '6.3',
     }
 
     @property