diff --git a/Dockerfile b/Dockerfile
index 9311e58f0..8f0d2248c 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,5 +1,5 @@
-# Use imutable image tags rather than mutable tags (like ubuntu:18.04)
-FROM ubuntu:bionic-20200807
+# Use imutable image tags rather than mutable tags (like ubuntu:20.04)
+FROM ubuntu:focal-20220316
 
 RUN apt update -y \
     && apt install -y \