diff --git a/src/documents/filters.py b/src/documents/filters.py
index 3e828e332..cdf6f63b0 100755
--- a/src/documents/filters.py
+++ b/src/documents/filters.py
@@ -37,7 +37,7 @@ class TagFilterSet(FilterSet):
 
 class DocumentTypeFilterSet(FilterSet):
 
-    class Meta(object):
+    class Meta:
         model = DocumentType
         fields = {
             "name": [
diff --git a/src/documents/serialisers.py b/src/documents/serialisers.py
index 683fe5e1c..da1b8d17e 100644
--- a/src/documents/serialisers.py
+++ b/src/documents/serialisers.py
@@ -12,7 +12,7 @@ class CorrespondentSerializer(serializers.HyperlinkedModelSerializer):
 
 class DocumentTypeSerializer(serializers.HyperlinkedModelSerializer):
 
-    class Meta(object):
+    class Meta:
         model = DocumentType
         fields = ("id", "slug", "name", "automatic_classification")
 
diff --git a/src/paperless/settings.py b/src/paperless/settings.py
index 21a00869a..b0eb809d3 100755
--- a/src/paperless/settings.py
+++ b/src/paperless/settings.py
@@ -81,7 +81,7 @@ INSTALLED_APPS = [
 
     "rest_framework",
     "crispy_forms",
-    "django_filters"
+    "django_filters",
 
 ]