diff --git a/test/debian.Dockerfile b/test/debian.Dockerfile
index 9b72fc6a..d6609ba3 100644
--- a/test/debian.Dockerfile
+++ b/test/debian.Dockerfile
@@ -1,4 +1,4 @@
-FROM buildpack-deps:buster-scm
+FROM buildpack-deps:stretch-scm
 
 ENV GITDIR /etc/.pihole
 ENV SCRIPTDIR /opt/pihole
diff --git a/test/fedora.Dockerfile b/test/fedora.Dockerfile
index 869efb2b..02dcb733 100644
--- a/test/fedora.Dockerfile
+++ b/test/fedora.Dockerfile
@@ -1,4 +1,4 @@
-FROM fedora:32
+FROM fedora:31
 
 ENV GITDIR /etc/.pihole
 ENV SCRIPTDIR /opt/pihole