diff --git a/Dockerfile b/Dockerfile
index d83fa9f..f678abf 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -3,7 +3,7 @@
 #   /tenant-registry  — long-running API server
 #   /migrate          — one-shot schema migrator (Orca init container in prod)
 
-FROM golang:1.24-alpine AS build
+FROM golang:1.25-alpine AS build
 WORKDIR /src
 COPY go.mod go.sum ./
 RUN go mod download