diff --git a/nodeconductor/logging/handlers.py b/nodeconductor/logging/handlers.py
index <HASH>..<HASH> 100644
--- a/nodeconductor/logging/handlers.py
+++ b/nodeconductor/logging/handlers.py
@@ -1,9 +1,6 @@
-import logging
-
 from django.contrib.contenttypes import models as ct_models
 
 from nodeconductor.logging import models
-from nodeconductor.logging.log import event_logger
 
 
 def remove_related_alerts(sender, instance, **kwargs):
diff --git a/nodeconductor/logging/serializers.py b/nodeconductor/logging/serializers.py
index <HASH>..<HASH> 100644
--- a/nodeconductor/logging/serializers.py
+++ b/nodeconductor/logging/serializers.py
@@ -74,8 +74,6 @@ class BaseHookSerializer(serializers.HyperlinkedModelSerializer):
             'url': {'lookup_field': 'uuid'},
         }
 
-        read_only_fields = ('last_published',)
-
     def create(self, validated_data):
         validated_data['user'] = self.context['request'].user
         return super(BaseHookSerializer, self).create(validated_data)
Remove leftover imports (NC-<I>)