diff --git a/add_group_users.py b/add_group_users.py
new file mode 100755
index 0000000..51b46b2
--- /dev/null
+++ b/add_group_users.py
@@ -0,0 +1,36 @@
+import psycopg2
+import bioblend.galaxy
+import sys
+
+conn = psycopg2.connect(database="galaxy", user="postgres")
+cursor = conn.cursor()
+cursor.execute("SELECT * FROM galaxy_user")
+users = cursor.fetchall()
+user_dict = dict()
+
+for user in users:
+    user_dict[user[0]] = user[3] # id is key, email is value
+
+cursor.execute("SELECT * FROM custos_authnz_token")
+einfra_users = cursor.fetchall()
+
+einfra_emails = []
+for einfra_user in einfra_users:
+    einfra_emails.append(user_dict[einfra_user[1]])
+
+server = 'https://' + sys.argv[1]
+api_key = sys.argv[2]
+gi = bioblend.galaxy.GalaxyInstance(url=server, key=api_key)
+
+api_users = gi.users.get_users()
+id_dict = dict()
+for user in api_users:
+    id_dict[user['email']] = user['id']
+
+groups = gi.groups.get_groups()
+for group in groups:
+    if group['name'] == 'E-infra':
+        group_id = group['id']
+
+for mail in einfra_emails:
+    gi.groups.add_group_user(group_id=group_id, user_id=id_dict[mail])