diff --git a/Dockerfile b/Dockerfile
index 5a2df37..b465268 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM rust:1.85.0-alpine3.20
+FROM rust:1.85.0-alpine3.20@sha256:f0cef6c65992995b1c7816cb667de95799852e3fbed9d06f95855cbc512a0fd0
 
 ENV deny_version="0.18.0"