diff --git a/onedns/tests/__init__.py b/onedns/tests/__init__.py
index 10b91bf..effcb57 100644
--- a/onedns/tests/__init__.py
+++ b/onedns/tests/__init__.py
@@ -8,4 +8,5 @@ vcr = VCR(
         os.path.dirname(os.path.realpath(__file__)), 'fixtures/oneclient'
     ),
     record_mode='once',
+    path_transformer=VCR.ensure_suffix('.yaml'),
 )