diff --git a/tests/test_litellm/proxy/hooks/litellm_skills/test_main.py b/tests/test_litellm/proxy/hooks/litellm_skills/test_main.py
index c037f60ac25..dc7ebf6e2ec 100644
--- a/tests/test_litellm/proxy/hooks/litellm_skills/test_main.py
+++ b/tests/test_litellm/proxy/hooks/litellm_skills/test_main.py
@@ -1,3 +1,4 @@
+import os
 import subprocess
 import sys
 from typing import Final
@@ -78,6 +79,9 @@ def test_importing_proxy_hooks_does_not_mutate_litellm_callbacks():
         "assert len(litellm.callbacks) == 0, f'mutated: {litellm.callbacks}'"
     )
     result: Final = subprocess.run(
-        [sys.executable, "-c", script], capture_output=True, text=True
+        [sys.executable, "-c", script],
+        capture_output=True,
+        text=True,
+        env={**os.environ, "LITELLM_LOCAL_MODEL_COST_MAP": "True"},
     )
     assert result.returncode == 0, f"stdout: {result.stdout}\nstderr: {result.stderr}"