diff --git a/x509/serializers.py b/x509/serializers.py
index 765a495..42fea9d 100644
--- a/x509/serializers.py
+++ b/x509/serializers.py
@@ -105,7 +105,6 @@ class Meta:
             "id",
             "name",
             "subject",
-            "slug",
             "key",
             "created_at",
             "signed",