diff --git a/moodle.py b/moodle.py
index fb7443d..b6a3029 100644
--- a/moodle.py
+++ b/moodle.py
@@ -105,6 +105,9 @@ def users_create(self, userlist):
         """ Create moodle-user from a list of ldap-users """
         return self.call('core_user_create_users', users=userlist)
 
+    def users_update(self, users):
+        return self.call('core_user_update_users', users=users)
+
     def enrol_users(self, users):
         if len(users) > 0:
             self.call('enrol_manual_enrol_users', enrolments=users)
diff --git a/utils/update_user_emails.py b/utils/update_user_emails.py
new file mode 100644
index 0000000..e072023
--- /dev/null
+++ b/utils/update_user_emails.py
@@ -0,0 +1,28 @@
+import os
+import sys
+import inspect
+
+currentdir = os.path.dirname(os.path.abspath(inspect.getfile(inspect.currentframe())))
+parentdir = os.path.dirname(currentdir)
+sys.path.insert(0, parentdir)
+
+import moodle
+import json
+
+KEY = 'REPLACE_ME'
+URL = 'REPLACE_ME'
+ENDPOINT = '/webservice/rest/server.php'
+
+m = moodle.Moodle(URL + ENDPOINT, KEY)
+
+with open('user_dump.json', 'r') as userfile:
+    users = json.load(userfile)['users']
+    newUsers = m.users_get({'key': 'auth', 'value': 'ldap'})['users']
+    for user in users:
+        if "linux.lokal" not in user["email"]:
+            for nUser in newUsers:
+                if nUser['username'] == user['username']:
+                    print('Update user: ', user['username'], ' <', user['email'], '>')
+                    m.users_update([{'id': nUser['id'], 'email': user['email']}])
+
+print('===DONE===')