diff --git a/Dockerfile b/Dockerfile
index 33c055e..cd827b1 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,5 +1,5 @@
 # base
-FROM ubuntu:21.04
+FROM ubuntu:impish-20211015
 
 # set the github runner version
 ARG RUNNER_VERSION="2.286.0"