diff --git a/tests/test_registrar.py b/tests/test_registrar.py
index a8b6f140e7d62ea323b3f0acca2c112b31b89302..d9c68ee47fc58936ec0067a1ebc1caa366110bcc 100644
--- a/tests/test_registrar.py
+++ b/tests/test_registrar.py
@@ -14,7 +14,7 @@ TEST_ITEM = """{
     "id": "test",
     "geometry": null,
     "properties": {
-        "datetime": "2021-11-3T00:00:00Z"
+        "datetime": "2021-11-03T00:00:00Z"
     },
     "links": {