diff --git a/Dockerfile b/Dockerfile
index 3fbe129..6ee28f3 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM golang:1.20-alpine AS build-env
+FROM golang:1.25-alpine AS build-env
 
 WORKDIR /go/src/tailscale-forward-auth