diff --git a/letta/llm_api/google_vertex_client.py b/letta/llm_api/google_vertex_client.py
index 25b1e00f..c7c49ffa 100644
--- a/letta/llm_api/google_vertex_client.py
+++ b/letta/llm_api/google_vertex_client.py
@@ -90,7 +90,7 @@ class GoogleVertexClient(LLMClientBase):
         # Per https://ai.google.dev/gemini-api/docs/function-calling?example=meeting#notes_and_limitations
         # * Only a subset of the OpenAPI schema is supported.
         # * Supported parameter types in Python are limited.
-        unsupported_keys = ["default", "exclusiveMaximum", "exclusiveMinimum", "additionalProperties"]
+        unsupported_keys = ["default", "exclusiveMaximum", "exclusiveMinimum", "additionalProperties", "$schema"]
         keys_to_remove_at_this_level = [key for key in unsupported_keys if key in schema_part]
         for key_to_remove in keys_to_remove_at_this_level:
             logger.warning(f"Removing unsupported keyword 	'{key_to_remove}' from schema part.")