diff --git a/litellm/router.py b/litellm/router.py
index 0de47acff3b..3d041372964 100644
--- a/litellm/router.py
+++ b/litellm/router.py
@@ -7028,6 +7028,7 @@ class Router:
         # Reset per-strategy router registries so hot-reload doesn't leave
         # stale routers pointing at the old model_list.
         self.quality_routers = {}
+        self.complexity_routers = {}
         self._invalidate_model_group_info_cache()
         self._invalidate_access_groups_cache()
         # we add api_base/api_key each model so load balancing between azure/gpt on api_base1 and api_base2 works