diff --git a/litellm/main.py b/litellm/main.py
index 81db26603..4dede83c0 100644
--- a/litellm/main.py
+++ b/litellm/main.py
@@ -115,6 +115,7 @@ def completion(
     request_timeout=0,  # unused var for old version of OpenAI API
     fallbacks=[],
     caching = False,
+    cache_params = {}, # optional to specify metadata for caching
 ) -> ModelResponse:
     args = locals()
     try: