diff --git a/libs/aws/langchain_aws/chat_models/bedrock.py b/libs/aws/langchain_aws/chat_models/bedrock.py
index 4213fcfc..72f725c7 100644
--- a/libs/aws/langchain_aws/chat_models/bedrock.py
+++ b/libs/aws/langchain_aws/chat_models/bedrock.py
@@ -331,7 +331,7 @@ def _generate(
     ) -> ChatResult:
         completion = ""
         llm_output: Dict[str, Any] = {"model_id": self.model_id}
-        usage_info = {}
+        usage_info: Dict[str, Any] = {}
         if self.streaming:
             for chunk in self._stream(messages, stop, run_manager, **kwargs):
                 completion += chunk.text