diff --git a/contrib/docker/runtime/Dockerfile b/contrib/docker/runtime/Dockerfile
index b828a075..5df15a2a 100644
--- a/contrib/docker/runtime/Dockerfile
+++ b/contrib/docker/runtime/Dockerfile
@@ -1,4 +1,4 @@
-FROM debian:jessie
+FROM debian:stretch-slim
 
 RUN apt-get update && apt-get install -y \
     logrotate libmosquitto1 \