diff --git a/src/api/toolchain_routes.py b/src/api/toolchain_routes.py
index e42f3cb..36ee3b3 100644
--- a/src/api/toolchain_routes.py
+++ b/src/api/toolchain_routes.py
@@ -342,6 +342,8 @@ async def _handle_pull_request(payload: Dict[str, Any]) -> None:
         await _handle_pr_opened(payload)
     elif action == "closed":
         await _handle_pr_closed(payload)
+    elif action == "synchronize":
+        await _handle_pr_synchronize(payload)
 
 
 async def _handle_pr_opened(payload: Dict[str, Any]) -> None: