diff --git a/pytest.ini b/pytest.ini
index 0bf9d5a6..369a93b7 100644
--- a/pytest.ini
+++ b/pytest.ini
@@ -1,4 +1,3 @@
-[pytest]
 # pytest configuration for AITBC
 
 # Test discovery
@@ -6,6 +5,9 @@ python_files = test_*.py *_test.py
 python_classes = Test*
 python_functions = test_*
 
+# Cache directory - prevent root level cache
+cache_dir = dev/cache/.pytest_cache
+
 # Custom markers
 markers =
     unit: Unit tests (fast, isolated)