diff --git a/service/gcbrun_experiment.py b/service/gcbrun_experiment.py
index f19ab493d..fa0313ec8 100644
--- a/service/gcbrun_experiment.py
+++ b/service/gcbrun_experiment.py
@@ -20,6 +20,7 @@
 import logging
 import os
 import sys
+# dummy
 
 # pytype: disable=import-error
 import github  # pylint: disable=import-error