diff --git a/Containerfile b/Containerfile
index 7f26e17..dcb085f 100644
--- a/Containerfile
+++ b/Containerfile
@@ -1,4 +1,4 @@
-FROM docker.io/clux/muslrust:1.74.0-stable as build
+FROM docker.io/clux/muslrust:1.74.0-stable@sha256:4b7e3c8290fd1f59f58adf38ffe88298dcbf8455a28c629a7a9c39d28711fbd4 as build
 
 ARG WEBVAULT_VERSION
 ARG VAULTWARDEN_VERSION