diff --git a/Dockerfile b/Dockerfile
index 5156948..12d19ae 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -6,8 +6,8 @@ ARG DISTRO=focal
 #--------------------------------------
 # base images
 #--------------------------------------
-FROM ubuntu:focal@sha256:ed4a42283d9943135ed87d4ee34e542f7f5ad9ecf2f244870e23122f703f91c2 as build-focal
-FROM ubuntu:jammy@sha256:2b7412e6465c3c7fc5bb21d3e6f1917c167358449fecac8176c6e496e5c1f05f as build-jammy
+FROM ubuntu:focal@sha256:f5c3e53367f142fab0b49908550bdcdc4fb619d2f61ec1dfa60d26e0d59ac9e7 as build-focal
+FROM ubuntu:jammy@sha256:8eab65df33a6de2844c9aefd19efe8ddb87b7df5e9185a4ab73af936225685bb as build-jammy
 
 
 #--------------------------------------