diff --git a/server/data_updates/00014_20180801-143538_vocabularies.py b/server/data_updates/00014_20180801-143538_vocabularies.py
index 0b9e1a91f..a4ec55156 100644
--- a/server/data_updates/00014_20180801-143538_vocabularies.py
+++ b/server/data_updates/00014_20180801-143538_vocabularies.py
@@ -642,7 +642,7 @@ def forwards(self, mongodb_collection, mongodb_database):
             if 'schema' in vocabulary:
                 schema = vocabulary['schema']
                 for field in ['name', 'qcode']:
-                    if field in vocabulary['schema'] and type(vocabulary['schema']) == dict:
+                    if field in vocabulary['schema'] and isinstance(vocabulary['schema'], dict):
                         schema[field]['required'] = True
                 mongodb_collection.update({'_id': vocabulary.get(config.ID_FIELD)},
                                           {'$set': {'schema': schema}})
diff --git a/server/requirements.txt b/server/requirements.txt
index 5c6a18a60..1ac8b68f6 100644
--- a/server/requirements.txt
+++ b/server/requirements.txt
@@ -212,7 +212,7 @@ pytz==2022.5
     #   icalendar
     #   superdesk-core
     #   tzlocal
-pyyaml==5.4.1
+pyyaml==6.0.1
     # via superdesk-core
 raven[flask]==6.10.0
     # via superdesk-core