diff --git a/Dockerfile b/Dockerfile
index f3eb588..4433b5b 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -6,8 +6,8 @@ ARG DISTRO=focal
 #--------------------------------------
 # base images
 #--------------------------------------
-FROM ghcr.io/containerbase/ubuntu:20.04@sha256:8feb4d8ca5354def3d8fce243717141ce31e2c428701f6682bd2fafe15388214 AS build-focal
-FROM ghcr.io/containerbase/ubuntu:22.04@sha256:962f6cadeae0ea6284001009daa4cc9a8c37e75d1f5191cf0eb83fe565b63dd7 AS build-jammy
+FROM ghcr.io/containerbase/ubuntu:26.04@sha256:f3d28607ddd78734bb7f71f117f3c6706c666b8b76cbff7c9ff6e5718d46ff64 AS build-focal
+FROM ghcr.io/containerbase/ubuntu:26.04@sha256:f3d28607ddd78734bb7f71f117f3c6706c666b8b76cbff7c9ff6e5718d46ff64 AS build-jammy
 
 
 #--------------------------------------