diff --git a/synapse/module_api/__init__.py b/synapse/module_api/__init__.py
index 18d6d1058a3d..798586b64926 100644
--- a/synapse/module_api/__init__.py
+++ b/synapse/module_api/__init__.py
@@ -1456,7 +1456,7 @@ async def lookup_room_alias(self, room_alias: str) -> Tuple[str, List[str]]:
         """
         Get the room ID associated with a room alias.
 
-        Added in Synapse v1.65.0.
+        Added in Synapse v1.66.0.
 
         Args:
             room_alias: The alias to look up.