diff --git a/vmware_nsx/plugins/nsx_v/plugin.py b/vmware_nsx/plugins/nsx_v/plugin.py
index 570bf4bcaa..66e5acc1aa 100644
--- a/vmware_nsx/plugins/nsx_v/plugin.py
+++ b/vmware_nsx/plugins/nsx_v/plugin.py
@@ -2849,6 +2849,10 @@ class NsxVPluginV2(addr_pair_db.AllowedAddressPairsMixin,
                 raise n_exc.InvalidInput(error_message=err_msg)
 
     def update_router(self, context, router_id, router):
+        with locking.LockManager.get_lock('router-%s' % router_id):
+            return self._safe_update_router(context, router_id, router)
+
+    def _safe_update_router(self, context, router_id, router):
         # Validate that the gateway information is relevant
         self._extract_external_gw(context, router, is_extract=False)
         # Toggling the distributed flag is not supported