diff --git a/builder/Dockerfile-deb b/builder/Dockerfile-deb
index 643898b..90342fd 100644
--- a/builder/Dockerfile-deb
+++ b/builder/Dockerfile-deb
@@ -1,4 +1,4 @@
-FROM debian:stable
+FROM ubuntu:16.04
 
 RUN apt-get update \
  && apt-get install -y --no-install-recommends \
diff --git a/builder/Dockerfile-rpm b/builder/Dockerfile-rpm
index c430c79..b0cb1e4 100644
--- a/builder/Dockerfile-rpm
+++ b/builder/Dockerfile-rpm
@@ -1,4 +1,4 @@
-FROM centos:latest
+FROM centos:7
 
 RUN yum groupinstall -y 'Development Tools'