diff --git a/certbot-compatibility-test/Dockerfile b/certbot-compatibility-test/Dockerfile
index 1e9e0d727..2716d6fcb 100644
--- a/certbot-compatibility-test/Dockerfile
+++ b/certbot-compatibility-test/Dockerfile
@@ -1,4 +1,4 @@
-FROM debian:jessie
+FROM debian:stretch
 MAINTAINER Brad Warren <bmw@eff.org>
 
 # no need to mkdir anything: