diff --git a/Dockerfile b/Dockerfile
index 6efe105..f8a9b6a 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -32,7 +32,7 @@ FROM --platform=$BUILDPLATFORM tonistiigi/xx:1.9.0@sha256:c64defb9ed5a91eacb37f9
 # =============================================================================
 # Stage 1: Build Tailscale combined binary (cross-compiled, runs natively)
 # =============================================================================
-FROM --platform=$BUILDPLATFORM golang:1.26.4-alpine@sha256:7a3e50096189ad57c9f9f865e7e4aa8585ed1585248513dc5cda498e2f41812c AS builder
+FROM --platform=$BUILDPLATFORM golang:1.26.4-alpine@sha256:f1ddd9fe14fffc091dd98cb4bfa999f32c5fc77d2f2305ea9f0e2595c5437c14 AS builder
 
 # renovate: datasource=github-releases depName=tailscale packageName=tailscale/tailscale versioning=semver
 ARG TAILSCALE_VERSION=v1.98.5