diff --git a/demo/go-client-api/vendor/github.com/ethereum/go-ethereum/containers/docker/master-ubuntu/Dockerfile b/demo/go-client-api/vendor/github.com/ethereum/go-ethereum/containers/docker/master-ubuntu/Dockerfile
index 4cfc4f58..544cda8d 100644
--- a/demo/go-client-api/vendor/github.com/ethereum/go-ethereum/containers/docker/master-ubuntu/Dockerfile
+++ b/demo/go-client-api/vendor/github.com/ethereum/go-ethereum/containers/docker/master-ubuntu/Dockerfile
@@ -1,4 +1,4 @@
-FROM ubuntu:xenial
+FROM ubuntu:xenial-20210114
 
 ENV PATH=/usr/lib/go-1.9/bin:$PATH