diff --git a/semantic_router/encoders/bedrock.py b/semantic_router/encoders/bedrock.py
index bb27572aaf1d498fb77f83135a5ac850d5bb5b10..82503877e098917799513e4e597212e5f33fd535 100644
--- a/semantic_router/encoders/bedrock.py
+++ b/semantic_router/encoders/bedrock.py
@@ -11,7 +11,7 @@ class BedrockEncoder(BaseEncoder):
     client: Any = None
     type: str = "bedrock"
     input_type: Optional[str] = "search_query"
-    session: Optional[Any] = (None,)
+    session: Optional[Any] = None
     region: Optional[str] = None
 
     def __init__(