diff --git a/tests/tools/test_mcp_stability.py b/tests/tools/test_mcp_stability.py
index 32e539c7a..2c3734274 100644
--- a/tests/tools/test_mcp_stability.py
+++ b/tests/tools/test_mcp_stability.py
@@ -1,9 +1,12 @@
 """Tests for MCP stability fixes — event loop handler, PID tracking, shutdown robustness."""
 
 import asyncio
+import os
 import signal
 from unittest.mock import patch, MagicMock
 
+import pytest
+
 
 
 # ---------------------------------------------------------------------------