diff --git a/litellm/integrations/langfuse.py b/litellm/integrations/langfuse.py
index 3c3e793df..3031868ec 100644
--- a/litellm/integrations/langfuse.py
+++ b/litellm/integrations/langfuse.py
@@ -255,6 +255,7 @@ class LangFuseLogger:
                     if key in [
                         "user_api_key",
                         "user_api_key_user_id",
+                        "semantic-similarity",
                     ]:
                         tags.append(f"{key}:{value}")
                 if "cache_hit" in kwargs: