diff --git a/Dockerfile b/Dockerfile
index d7046b9..4eb86de 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,5 +1,5 @@
 # NAME: dclong/base
-FROM ubuntu:24.04
+FROM ubuntu:26.04
 
 # shell
 SHELL ["/bin/bash", "-O", "extglob", "-c"]