diff --git a/examples/cookbook/requirements.txt b/examples/cookbook/requirements.txt
index fe0527a..9d13a82 100644
--- a/examples/cookbook/requirements.txt
+++ b/examples/cookbook/requirements.txt
@@ -1,5 +1,5 @@
 graphene
 graphene-django
 graphql-core>=2.1rc1
-django==1.11.20
+django==1.11.21
 django-filter>=2