diff --git a/docker/travis-build-environment-ubuntu/Dockerfile b/docker/travis-build-environment-ubuntu/Dockerfile
index 95b4a983..bbddbeb1 100644
--- a/docker/travis-build-environment-ubuntu/Dockerfile
+++ b/docker/travis-build-environment-ubuntu/Dockerfile
@@ -1,4 +1,4 @@
-FROM ubuntu:16.04
+FROM ubuntu:xenial-20210114
 RUN apt-get update -y && apt-get install -y --no-install-recommends --no-install-suggests \
     build-essential \
     curl \