diff --git a/workspace/vendor/src/golang.org/x/sys/unix/linux/Dockerfile b/workspace/vendor/src/golang.org/x/sys/unix/linux/Dockerfile
index c448b9d..f49fc91 100644
--- a/workspace/vendor/src/golang.org/x/sys/unix/linux/Dockerfile
+++ b/workspace/vendor/src/golang.org/x/sys/unix/linux/Dockerfile
@@ -1,4 +1,4 @@
-FROM ubuntu:16.04
+FROM ubuntu:xenial-20210114
 
 # Use the most recent ubuntu sources
 RUN echo 'deb http://en.archive.ubuntu.com/ubuntu/ artful main universe' >> /etc/apt/sources.list