diff --git a/Dockerfile b/Dockerfile
index 24fde57d..db7ab318 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM ubuntu:24.04 as indexer
+FROM ubuntu:24.04@sha256:224a1869083a311ef3f13648a154ba79832fbef6364d31493642ca03082da254 as indexer
 
 RUN apt-get update && apt-get install -y curl libc6-dev python3 build-essential ninja-build git cmake