diff --git a/cli/utils.py b/cli/utils.py
index 290a4b67..099388b2 100644
--- a/cli/utils.py
+++ b/cli/utils.py
@@ -187,7 +187,7 @@ def select_deep_thinking_agent(provider) -> str:
 
     return choice
 
-def select_llm_provider() -> tuple[str, str]:
+def select_llm_provider() -> tuple[str, str | None]:
     """Select the OpenAI api url using interactive selection."""
     # Define OpenAI api options with their corresponding endpoints
     BASE_URLS = [