diff --git a/litellm/proxy/ui_crud_endpoints/proxy_setting_endpoints.py b/litellm/proxy/ui_crud_endpoints/proxy_setting_endpoints.py
index 294a580a7f8..8d476d74dd7 100644
--- a/litellm/proxy/ui_crud_endpoints/proxy_setting_endpoints.py
+++ b/litellm/proxy/ui_crud_endpoints/proxy_setting_endpoints.py
@@ -161,3 +161,39 @@ async def get_sso_settings():
         }
 
     return result
+
+
+@router.patch(
+    "/update/internal_user_settings",
+    tags=["SSO Settings"],
+    dependencies=[Depends(user_api_key_auth)],
+)
+async def update_internal_user_settings(settings: DefaultInternalUserParams):
+    """
+    Update the default internal user parameters for SSO users.
+    These settings will be applied to new users who sign in via SSO.
+    """
+    from litellm.proxy.proxy_server import proxy_config
+
+    # Update the in-memory settings
+    litellm.default_internal_user_params = settings.model_dump(exclude_none=True)
+
+    # Load existing config
+    config = await proxy_config.get_config()
+
+    # Update config with new settings
+    if "litellm_settings" not in config:
+        config["litellm_settings"] = {}
+
+    config["litellm_settings"]["default_internal_user_params"] = settings.model_dump(
+        exclude_none=True
+    )
+
+    # Save the updated config
+    await proxy_config.save_config(new_config=config)
+
+    return {
+        "message": "Internal user settings updated successfully",
+        "status": "success",
+        "settings": litellm.default_internal_user_params,
+    }