diff --git a/taiga/projects/occ/mixins.py b/taiga/projects/occ/mixins.py
index 727e57e6..e10bf386 100644
--- a/taiga/projects/occ/mixins.py
+++ b/taiga/projects/occ/mixins.py
@@ -31,7 +31,9 @@ class OCCResourceMixin(object):
         if current_version != param_version:
             raise exc.WrongArguments({"version": "The version doesn't match with the current one"})
 
-        obj.version = models.F('version') + 1
+        if obj.id:
+            obj.version = models.F('version') + 1
+
         super().pre_save(obj)