diff --git a/AdrianPaez_spec.yml b/AdrianPaez_spec.yml
index 4dd8417..81df41b 100644
--- a/AdrianPaez_spec.yml
+++ b/AdrianPaez_spec.yml
@@ -34,7 +34,8 @@ components:
           type: guid
         timespam:
           description: Transaction moment as ISO 8601 in UTC
-          type: datetime
+          format: date-time
+          type: string
         fromAddress:
           description: Source address
           type: string