diff --git a/runbot/models/version.py b/runbot/models/version.py
index 31eb5d85..e381e5c0 100644
--- a/runbot/models/version.py
+++ b/runbot/models/version.py
@@ -33,13 +33,14 @@ class Version(models.Model):
                 version.is_major = False
             else:
                 # max version number with this format: 99.99
-                version.number = '.'.join([elem.zfill(2) for elem in re.sub(r'[^0-9\.]', '', version.name).split('.')])
+                version.number = '.'.join([elem.zfill(2) for elem in re.sub(r'[^0-9\.]', '', version.name or '').split('.')])
                 version.is_major = all(elem == '00' for elem in version.number.split('.')[1:])
 
-    def create(self, values):
+    @api.model_create_multi
+    def create(self, vals_list):
         model = self.browse()
         model._get_id.clear_cache(model)
-        return super().create(values)
+        return super().create(vals_list)
 
     def _get(self, name):
         return self.browse(self._get_id(name))