diff --git a/pandahub/lib/PandaHub.py b/pandahub/lib/PandaHub.py
index 5200b25..c51b994 100644
--- a/pandahub/lib/PandaHub.py
+++ b/pandahub/lib/PandaHub.py
@@ -330,7 +330,7 @@ def upgrade_project_to_latest_version(self):
         # TODO these operations should be encapsulated in a transaction in order to avoid
         #      inconsistent Database states in case of occuring errors
 
-        if version.parse(self.get_project_version()) < version.parse("0.2.3"):
+        if version.parse(self.get_project_version()) < version.parse("0.2.4"):
             db = self._get_project_database()
             all_collection_names = db.list_collection_names()
             old_net_collections = [name for name in all_collection_names if
@@ -555,7 +555,7 @@ def _get_net_from_db_by_id(self, id_, include_results=True, only_tables=None, co
         return net
 
     def deserialize_and_update_data(self, net, meta):
-        if version.parse(self.get_project_version()) <= version.parse("0.2.3"):
+        if version.parse(self.get_project_version()) <= version.parse("0.2.4"):
             if meta.get("sector", "power") == "power":
                 data = dict((k, json.loads(v, cls=io_pp.PPJSONDecoder)) for k, v in meta['data'].items())
                 net.update(data)
diff --git a/pandahub/lib/database_toolbox.py b/pandahub/lib/database_toolbox.py
index bc533ea..634c330 100644
--- a/pandahub/lib/database_toolbox.py
+++ b/pandahub/lib/database_toolbox.py
@@ -275,7 +275,7 @@ def serialize_object_data(element, element_data, version_):
     json
         A json representation of the pandapower element
     '''
-    if version_ <= version.parse("0.2.3"):
+    if version_ <= version.parse("0.2.4"):
         try:
             element_data = json.dumps(element_data, cls=PPJSONEncoder)
         except:
diff --git a/setup.py b/setup.py
index 5f18585..6a7fd07 100644
--- a/setup.py
+++ b/setup.py
@@ -37,7 +37,7 @@
     name='pandahub',
     packages=find_packages(),
     url='https://github.com/e2nIEE/pandahub',
-    version='0.2.3',
+    version='0.2.4',
     include_package_data=True,
     long_description_content_type='text/markdown',
     zip_safe=False,