diff --git a/Dockerfile b/Dockerfile
index c02763928..52b6ea6a7 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,7 +1,7 @@
 # Original credit: https://github.com/jpetazzo/dockvpn
 
 # Smallest base image
-FROM ubuntu:18.04@sha256:9bc830af2bef73276515a29aa896eedfa7bdf4bdbc5c1063b4c457a4bbb8cd79
+FROM ubuntu:22.04@sha256:f4dd0db54f116682a31ea556ae77e323493c72e194903e60cd7d68721816d50e
 
 LABEL maintainer="lawtancool"