diff --git a/data/partners/colectic.yml b/data/partners/colectic.yml
index 75eea195..693c6172 100644
--- a/data/partners/colectic.yml
+++ b/data/partners/colectic.yml
@@ -1,5 +1,5 @@
 name: Colectic
 url: https://colectic.coop/
 image: /uploads/logo_partner_colectic.png
-joined_at: 29-12-2022
+joined_at: 2022-12-29T11:00:00.000Z
 type: provider