diff --git a/add_group.py b/add_group.py
new file mode 100755
index 0000000..af8169d
--- /dev/null
+++ b/add_group.py
@@ -0,0 +1,28 @@
+#!/usr/bin/python3
+
+import ox
+
+url = 'https://'
+listname = 'a:foobar'
+group = 'example'
+username = 'fixme'
+password = 'fixme'
+
+
+api = ox.API(url)
+api.signin(username=username, password=password)
+for item in api.find({
+    'query': {
+        'conditions': [{
+            'key': 'list',
+            'value': listname,
+            'operator': '=='
+        }]
+    },
+    'keys': ['id'],
+    'range': [0, 5000]
+})['data']['items']:
+    api.edit({
+        'id': item['id'],
+        'groups': [group]
+    })