diff --git a/test/backend/assets/sidecar/flatxmp.json b/test/backend/assets/sidecar/flatxmp.json
index 10dfa9d9..2abb8854 100644
--- a/test/backend/assets/sidecar/flatxmp.json
+++ b/test/backend/assets/sidecar/flatxmp.json
@@ -5,6 +5,7 @@
   },
   "caption": "Description of image",
   "creationDate": 328817998000,
+  "creationDateOffset": "-06:00",
   "faces": [
     {
       "box": {