diff --git a/Dockerfile b/Dockerfile
index 8e8e9d043..b4df32947 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -16,7 +16,7 @@
 
 ## Build
 
-FROM docker.io/library/golang:1.26.3 AS build
+FROM docker.io/library/golang:1.26.3@sha256:2d6c80227255c3112a4d08e67ba98e58efd3846daf15d9d7d4c389565d881b1a AS build
 
 ARG TARGETOS
 ARG TARGETARCH