diff --git a/Dockerfile b/Dockerfile
index e11392e..14e6aac 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM ubuntu:24.04
+FROM ubuntu:24.04@sha256:c4a8d5503dfb2a3eb8ab5f807da5bc69a85730fb49b5cfca2330194ebcc41c7b
 
 RUN apt-get update --fix-missing
 RUN apt-get upgrade --yes