diff --git a/api/v1/swagger/definitions/account_line.json b/api/v1/swagger/definitions/account_line.json
index f1a68a570e..5cdd169518 100644
--- a/api/v1/swagger/definitions/account_line.json
+++ b/api/v1/swagger/definitions/account_line.json
@@ -25,7 +25,7 @@
     },
     "date": {
       "type": "string",
-      "format": "date",
+      "format": "date-time",
       "description": "Date the account line was created"
     },
     "amount": {