diff --git a/libs/aws/langchain_aws/chat_models/bedrock.py b/libs/aws/langchain_aws/chat_models/bedrock.py
index 52153e39..26259caa 100644
--- a/libs/aws/langchain_aws/chat_models/bedrock.py
+++ b/libs/aws/langchain_aws/chat_models/bedrock.py
@@ -434,7 +434,9 @@ def _generate(
                 )
 
             if stop:
-                params["stop_sequences"] = stop
+                provider = self._get_provider()
+                if k := self.provider_stop_sequence_key_name_map.get(provider):
+                    params[k] = stop
 
             completion, llm_output = self._prepare_input_and_invoke(
                 prompt=prompt,