diff --git a/apps/assets/serializers/asset.py b/apps/assets/serializers/asset.py
index 48e778eac..a3661db5c 100644
--- a/apps/assets/serializers/asset.py
+++ b/apps/assets/serializers/asset.py
@@ -20,7 +20,7 @@ class AssetSerializer(BulkSerializerMixin, serializers.ModelSerializer):
         model = Asset
         list_serializer_class = BulkListSerializer
         fields = '__all__'
-        validators = []  # If not set to [], partial bulk update will be error
+        validators = []
 
     def get_field_names(self, declared_fields, info):
         fields = super().get_field_names(declared_fields, info)
diff --git a/apps/users/serializers.py b/apps/users/serializers.py
index 21103c6a8..9f99c0171 100644
--- a/apps/users/serializers.py
+++ b/apps/users/serializers.py
@@ -23,6 +23,7 @@ class UserSerializer(BulkSerializerMixin, serializers.ModelSerializer):
             'first_name', 'last_name', 'password', '_private_key',
             '_public_key', '_otp_secret_key', 'user_permissions'
         ]
+        # validators = []
 
     def get_field_names(self, declared_fields, info):
         fields = super(UserSerializer, self).get_field_names(declared_fields, info)
@@ -71,7 +72,7 @@ class UserGroupSerializer(BulkSerializerMixin, serializers.ModelSerializer):
 
 
 class UserGroupUpdateMemeberSerializer(serializers.ModelSerializer):
-    users = serializers.PrimaryKeyRelatedField(many=True, queryset = User.objects.all())
+    users = serializers.PrimaryKeyRelatedField(many=True, queryset=User.objects.all())
 
     class Meta:
         model = UserGroup
diff --git a/requirements/requirements.txt b/requirements/requirements.txt
index 4373a83da..ba44a9281 100644
--- a/requirements/requirements.txt
+++ b/requirements/requirements.txt
@@ -14,11 +14,11 @@ coreapi==2.3.3
 coreschema==0.0.4
 cryptography==2.1.4
 decorator==4.1.2
-Django==2.0.7
+Django==2.1.0
 django-auth-ldap==1.3.0
 django-bootstrap3==9.1.0
 django-celery-beat==1.1.1
-django-filter==1.1.0
+django-filter==2.0.0
 django-formtools==2.1
 django-ranged-response==0.2.0
 django-redis-cache==1.7.1