diff --git a/tests/test_yaml.py b/tests/test_yaml.py
index a8a9a86..ae124c1 100755
--- a/tests/test_yaml.py
+++ b/tests/test_yaml.py
@@ -90,7 +90,7 @@ class YamlTest(TestBase):
 
         # convert excuses to source indexed dict
         excuses_dict = {}
-        for s in yaml.load(excuses_yaml)['sources']:
+        for s in yaml.load(excuses_yaml, Loader=yaml.CSafeLoader)['sources']:
             excuses_dict[s['source']] = s
 
         if 'SHOW_EXCUSES' in os.environ: