diff --git a/code/kubernetes/python-cdk/python/PostgreSQL_example/requirements.txt b/code/kubernetes/python-cdk/python/PostgreSQL_example/requirements.txt
index 74aaf6d..d1725c8 100644
--- a/code/kubernetes/python-cdk/python/PostgreSQL_example/requirements.txt
+++ b/code/kubernetes/python-cdk/python/PostgreSQL_example/requirements.txt
@@ -30,5 +30,5 @@ python-dateutil==2.8.0
 six==1.12.0
 typed-ast==1.4.0
 typing-extensions==3.7.4
-virtualenv==16.7.4
+virtualenv==20.26.6
 wrapt==1.11.2