diff --git a/Dockerfile b/Dockerfile
index d4f4a26..f995a5e 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,7 +1,7 @@
 # syntax=docker/dockerfile:1.6
 
 # Build stage — compiles the maping-server binary from the Go workspace.
-FROM golang:1.26-alpine AS builder
+FROM golang:1.27-alpine AS builder
 
 RUN apk add --no-cache git ca-certificates