diff --git a/weldx/asdf/util.py b/weldx/asdf/util.py
index b8a3b0faf..de667fd3f 100644
--- a/weldx/asdf/util.py
+++ b/weldx/asdf/util.py
@@ -321,6 +321,7 @@ def dataclass_serialization_class(
         A new asdf serialization class.
 
     """
+    v = version
 
     def _noop(tree):
         return tree
@@ -332,7 +333,7 @@ def _noop(tree):
 
     class _SerializationClass(WeldxType):
         name = class_name
-        version = "1.0.0"
+        version = v
         types = [class_type]
         requires = ["weldx"]
         handle_dynamic_subclasses = True