diff --git a/docker/src/docker/Dockerfile b/docker/src/docker/Dockerfile
index d3d287a750..41be49ad20 100644
--- a/docker/src/docker/Dockerfile
+++ b/docker/src/docker/Dockerfile
@@ -1,4 +1,4 @@
-FROM azul/zulu-openjdk:8u192
+FROM azul/zulu-openjdk:8u312
 
 ## Add packages, clean cache, create dirs, create corda user and change ownership
 RUN apt-get update && \
@@ -63,4 +63,4 @@ COPY --chown=corda:corda starting-node.conf /opt/corda/starting-node.conf
 USER "corda"
 EXPOSE ${MY_P2P_PORT} ${MY_RPC_PORT} ${MY_RPC_ADMIN_PORT}
 WORKDIR /opt/corda
-CMD ["run-corda"]
\ No newline at end of file
+CMD ["run-corda"]
diff --git a/docker/src/docker/Dockerfile-debug b/docker/src/docker/Dockerfile-debug
index 5b0c7bbb1f..b961b4570d 100644
--- a/docker/src/docker/Dockerfile-debug
+++ b/docker/src/docker/Dockerfile-debug
@@ -1,4 +1,4 @@
-FROM azul/zulu-openjdk:8u192
+FROM azul/zulu-openjdk:8u312
 
 ## Add packages, clean cache, create dirs, create corda user and change ownership
 RUN apt-get update && \