diff --git a/examples/cookbook-plain/requirements.txt b/examples/cookbook-plain/requirements.txt
index aaf687b..9fc1a3a 100644
--- a/examples/cookbook-plain/requirements.txt
+++ b/examples/cookbook-plain/requirements.txt
@@ -1,4 +1,4 @@
 graphene>=2.1,<3
 graphene-django>=2.1,<3
 graphql-core>=2.1,<3
-django==3.1.6
+django==3.1.8