diff --git a/lib/hero/db/core_models.v b/lib/hero/db/core_models.v
index 6f2989ab..7188313c 100644
--- a/lib/hero/db/core_models.v
+++ b/lib/hero/db/core_models.v
@@ -5,8 +5,8 @@ pub mut:
 	id             u32
 	name           string
 	description    string
-	created_at     u32
-	updated_at     u32
+	created_at     i64
+	updated_at     i64
 	securitypolicy u32
 	tags           u32 // when we set/get we always do as []string but this can then be sorted and md5ed this gies the unique id of tags
 	messages       []u32