diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index fa66783..23056a2 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -16,7 +16,7 @@ jobs:
 
       - uses: actions/setup-go@v7
         with:
-          go-version: "1.25"
+          go-version: "1.26"
           check-latest: true
 
       - name: gofmt
@@ -58,7 +58,7 @@ jobs:
 
       - uses: actions/setup-go@v7
         with:
-          go-version: "1.25"
+          go-version: "1.26"
           check-latest: true
 
       - name: Install BIRD
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index c2ed561..42338c7 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -16,7 +16,7 @@ jobs:
 
       - uses: actions/setup-go@v7
         with:
-          go-version: "1.25"
+          go-version: "1.26"
           check-latest: true
 
       - name: Cross-compile
diff --git a/Dockerfile b/Dockerfile
index afecb7f..331d878 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,7 +1,7 @@
 # syntax=docker/dockerfile:1
 
 # ── build ────────────────────────────────────────────────────────────────
-FROM golang:1.25-alpine AS build
+FROM golang:1.26-alpine AS build
 WORKDIR /src
 
 # Cache modules first.