diff --git a/Dockerfile.multiarch b/Dockerfile.multiarch
index ba4cb20..1168f74 100644
--- a/Dockerfile.multiarch
+++ b/Dockerfile.multiarch
@@ -1,4 +1,4 @@
-FROM --platform=$BUILDPLATFORM docker.io/golang:1.21 as build
+FROM --platform=$BUILDPLATFORM docker.io/golang:1.21@sha256:24a09375a6216764a3eda6a25490a88ac178b5fcb9511d59d0da5ebf9e496474 as build
 
 ARG TARGETOS
 ARG TARGETARCH