diff --git a/gnuviechadmin/osusers/models.py b/gnuviechadmin/osusers/models.py
index d50fe1f..ff36f49 100644
--- a/gnuviechadmin/osusers/models.py
+++ b/gnuviechadmin/osusers/models.py
@@ -14,7 +14,7 @@ from django.dispatch import Signal
 from django.utils import timezone
 from django.utils.translation import gettext as _
 from model_utils.models import TimeStampedModel
-from passlib.hash import sha512_crypt
+from passlib.handlers.sha2_crypt import sha512_crypt
 from passlib.pwd import genword
 
 _LOGGER = logging.getLogger(__name__)
@@ -175,8 +175,7 @@ class UserManager(models.Manager):
             shell=settings.OSUSER_DEFAULT_SHELL,
         )
         user.set_password(password)
-        if commit:
-            user.save()
+        user.save()
         return user
 
 
diff --git a/gnuviechadmin/osusers/signals.py b/gnuviechadmin/osusers/signals.py
index 5c1683e..a817af1 100644
--- a/gnuviechadmin/osusers/signals.py
+++ b/gnuviechadmin/osusers/signals.py
@@ -3,7 +3,7 @@ This module contains the signal handlers of the :py:mod:`osusers` app.
 
 The module starts Celery_ tasks.
 
-.. _Celery: http://www.celeryproject.org/
+.. _Celery: https://www.celeryproject.org/
 
 """
 from __future__ import absolute_import
@@ -256,13 +256,6 @@ def handle_ssh_keys_changed(sender, instance, **kwargs):
     _LOGGER.info("Change of SSH keys has been requested in task %s", taskresult.task_id)
 
 
-# @receiver(post_delete)
-# def handle_post_delete(sender, **kwargs):
-#     _LOGGER.debug(
-#         'handling post_delete signal for %s with args %s',
-#         sender, kwargs)
-
-
 @receiver(post_delete, sender=Group)
 def handle_group_deleted(sender, instance, **kwargs):
     """
diff --git a/gnuviechadmin/osusers/tests/test_models.py b/gnuviechadmin/osusers/tests/test_models.py
index 56ce4be..8770263 100644
--- a/gnuviechadmin/osusers/tests/test_models.py
+++ b/gnuviechadmin/osusers/tests/test_models.py
@@ -7,7 +7,7 @@ from django.core.exceptions import ValidationError
 from django.test import TestCase
 from django.test.utils import override_settings
 from django.utils import timezone
-from passlib.hash import sha512_crypt
+from passlib.handlers.sha2_crypt import sha512_crypt
 
 from osusers.models import (
     CANNOT_USE_PRIMARY_GROUP_AS_ADDITIONAL,