diff --git a/tests/test_litellm_rust/test_fork_guard.py b/tests/test_litellm_rust/test_fork_guard.py
index b92095cbaaa..c15555ff535 100644
--- a/tests/test_litellm_rust/test_fork_guard.py
+++ b/tests/test_litellm_rust/test_fork_guard.py
@@ -54,7 +54,7 @@ def test_compiled_extension_forbids_the_master_and_frees_its_workers() -> None:
     env = {**os.environ, "OBJC_DISABLE_INITIALIZE_FORK_SAFETY": "YES"}
 
     result = subprocess.run(
-        [sys.executable, "-c", _NATIVE_CONTRACT], capture_output=True, text=True, timeout=60, env=env
+        [sys.executable, "-I", "-c", _NATIVE_CONTRACT], capture_output=True, text=True, timeout=60, env=env
     )
 
     assert result.returncode == 0, result.stderr
@@ -144,7 +144,7 @@ def test_sdk_call_in_a_child_forked_after_native_use_raises_instead_of_hanging()
     }
 
     result = subprocess.run(
-        [sys.executable, "-c", _SDK_CONTRACT], capture_output=True, text=True, timeout=120, env=env
+        [sys.executable, "-I", "-c", _SDK_CONTRACT], capture_output=True, text=True, timeout=120, env=env
     )
 
     assert result.returncode == 0, result.stderr