diff --git a/auditlog/mixins.py b/auditlog/mixins.py
index f593432..84c18d0 100644
--- a/auditlog/mixins.py
+++ b/auditlog/mixins.py
@@ -1,5 +1,3 @@
-import json
-
 from django import urls as urlresolvers
 from django.conf import settings
 from django.contrib import admin