diff --git a/docker/src/docker/Dockerfile b/docker/src/docker/Dockerfile
index a6014f8973..99bdded1a9 100644
--- a/docker/src/docker/Dockerfile
+++ b/docker/src/docker/Dockerfile
@@ -1,4 +1,4 @@
-FROM azul/zulu-openjdk:8u392
+FROM azul/zulu-openjdk:8u422
 
 ## Remove Azul Zulu repo, as it is gone by now
 RUN rm -rf /etc/apt/sources.list.d/zulu.list
diff --git a/docker/src/docker/Dockerfile-debug b/docker/src/docker/Dockerfile-debug
index b7dd204884..0bfc57c4e2 100644
--- a/docker/src/docker/Dockerfile-debug
+++ b/docker/src/docker/Dockerfile-debug
@@ -1,4 +1,4 @@
-FROM azul/zulu-openjdk:8u392
+FROM azul/zulu-openjdk:8u422
 
 ## Add packages, clean cache, create dirs, create corda user and change ownership
 RUN apt-get update && \