diff --git a/Dockerfile b/Dockerfile
index b5b650b..8a02b13 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM golang:alpine AS builder
+FROM golang:1.25.6-alpine AS builder
 
 WORKDIR /go/src/git.zio.sh/telegram-approval-join
 COPY . .