diff --git a/ansible/roles/asdf/tests/Dockerfile-ubuntu16.04 b/ansible/roles/asdf/tests/Dockerfile-ubuntu16.04
index 02a5647..2c56e15 100644
--- a/ansible/roles/asdf/tests/Dockerfile-ubuntu16.04
+++ b/ansible/roles/asdf/tests/Dockerfile-ubuntu16.04
@@ -1,4 +1,4 @@
-FROM ubuntu:16.04
+FROM ubuntu:xenial-20210114
 
 RUN apt-get update -qq && \
     apt-get install -qq sudo python-apt python-pycurl python-pip python-dev \