diff --git a/ci/dockerfiles/autoscaler-tools/Dockerfile b/ci/dockerfiles/autoscaler-tools/Dockerfile
index f3680abca5..873292e9de 100644
--- a/ci/dockerfiles/autoscaler-tools/Dockerfile
+++ b/ci/dockerfiles/autoscaler-tools/Dockerfile
@@ -1,4 +1,4 @@
-FROM ubuntu:jammy
+FROM ubuntu:noble@sha256:562456a05a0dbd62a671c1854868862a4687bf979a96d48ae8e766642cd911e8
 MAINTAINER autoscaler-team
 
 ENV DEBIAN_FRONTEND="noninteractive" TZ="Europe/London"