diff --git a/test/test_main_invocation.py b/test/test_main_invocation.py
index 70efd2745..4751b7fd1 100644
--- a/test/test_main_invocation.py
+++ b/test/test_main_invocation.py
@@ -11,6 +11,7 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
+
 import os
 from pathlib import Path
 from unittest.mock import Mock