gistfile1.txt

diff --git a/submit_for_testing.py b/submit_for_testing.py
index 90183cb..c2b1d94 100755
--- a/submit_for_testing.py
+++ b/submit_for_testing.py
@@ -330,7 +330,7 @@ def main():
             with open(variables, "r") as vars_file:
                 try:
                     yaml = YAML()
-                    context.update(yaml.load(vars_file))
+                    context.update(yaml.load(vars_file, Loader=yaml.SafeLoader))
                 except ParserError as e:
                     logger.error(e)
                 except ComposerError as e: