diff --git a/run_tests3.sh b/run_tests3.sh
index 41d3880..f89492f 100755
--- a/run_tests3.sh
+++ b/run_tests3.sh
@@ -16,6 +16,8 @@ pip install -r tests/requirements.txt
 export PYTHONPATH=$(pwd)
 # $PIP install .
 
+flake8
+
 pytest -l -v -n 4
 
 set +eux
diff --git a/src/exceptions.py b/src/exceptions.py
index b5fb0d8..8b5c7c4 100644
--- a/src/exceptions.py
+++ b/src/exceptions.py
@@ -50,4 +50,4 @@ def convert_and_join(msg_list):
     type(TestgresException).__name__,
     type(InvalidOperationException).__name__,
     type(ExecUtilException).__name__,
-]
\ No newline at end of file
+]