diff --git a/example/requirements.txt b/example/requirements.txt
index b060c35..87737eb 100644
--- a/example/requirements.txt
+++ b/example/requirements.txt
@@ -1,3 +1,3 @@
 glob2==0.4.1
 hellbox==0.1.3
-virtualenv==21.2.4
+virtualenv==21.3.1