diff --git a/docker/Dockerfile b/docker/Dockerfile
index 7b4ca50..08d31b9 100644
--- a/docker/Dockerfile
+++ b/docker/Dockerfile
@@ -21,7 +21,7 @@ RUN pnpm build
 # Vite writes to ../internal/web/dist (= /internal/web/dist in container).
 
 # Stage 2 — backend build (embeds the frontend dist)
-FROM golang:1.25-alpine AS backend
+FROM golang:1.26-alpine AS backend
 WORKDIR /src
 RUN apk add --no-cache git ca-certificates
 COPY go.mod go.sum ./