diff --git a/tools/test_idf_py/test_idf_py.py b/tools/test_idf_py/test_idf_py.py
index b8c145e7e1..277dd78a4e 100755
--- a/tools/test_idf_py/test_idf_py.py
+++ b/tools/test_idf_py/test_idf_py.py
@@ -48,6 +48,11 @@ class TestWithoutExtensions(TestCase):
 
         super().setUpClass()
 
+    @classmethod
+    def tearDownClass(cls):
+        cls.env_patcher.stop()
+        super().tearDownClass()
+
 
 class TestExtensions(TestWithoutExtensions):
     @classmethod