diff --git a/modules/aws-cert-lambda/src/requirements.txt b/modules/aws-cert-lambda/src/requirements.txt
index 609038a..f67ffa6 100644
--- a/modules/aws-cert-lambda/src/requirements.txt
+++ b/modules/aws-cert-lambda/src/requirements.txt
@@ -1,3 +1,3 @@
 certbot==1.1.0
 certbot-dns-route53==1.1.0
-pyopenssl==19.1.0
+pyopenssl==26.0.0