diff --git a/models/res_partner_release.py b/models/res_partner_release.py
index 41ef94f0087a26451661e51d341fee302bb11aa1..b32e56253602f8b711941896c581df154fb58167 100644
--- a/models/res_partner_release.py
+++ b/models/res_partner_release.py
@@ -35,7 +35,7 @@ class PartnerRelease(models.Model):
     )
     release_date = fields.Datetime(
         string="Date de mise en production",
-        default=fields.Datetime.now(),
+        default=lambda self: fields.Datetime.now(),
     )
     release_module_ids = fields.One2many(
         comodel_name="res.partner.release.module",