diff --git a/.goreleaser.yml b/.goreleaser.yml
index 4893946..ee6ac0e 100644
--- a/.goreleaser.yml
+++ b/.goreleaser.yml
@@ -31,6 +31,11 @@ builds:
         goarch: amd64
       - goos: windows
         goarch: arm64
+    hooks:
+      post:
+        - cmd: ./scripts/gen-winget-manifest.sh "{{ .Path }}" "{{ .Version }}"
+          env:
+            - TARGET={{ .Os }}_{{ .Arch }}
 
 archives:
   - formats: [binary]
@@ -53,3 +58,5 @@ changelog:
 release:
   draft: false
   prerelease: auto
+  extra_files:
+    - glob: ./dist/winget-manifest.yaml
diff --git a/README.md b/README.md
index c847287..5aecc92 100644
--- a/README.md
+++ b/README.md
@@ -13,13 +13,44 @@
 
 ## インストール
 
-Go 1.26 以降:
+### Linux / macOS
+
+[gh](https://cli.github.com/) コマンドを使って最新リリースからバイナリを取得:
+
+```sh
+mkdir -p ~/.local/bin
+
+# Linux (amd64)
+gh release download --repo pepabo/xpoint-cli --pattern '*_linux_amd64' -O xp
+chmod +x xp && mv xp ~/.local/bin/
+
+# macOS (arm64)
+gh release download --repo pepabo/xpoint-cli --pattern '*_darwin_arm64' -O xp
+chmod +x xp && xattr -d com.apple.quarantine xp && mv xp ~/.local/bin/
+```
+
+[mise](https://mise.jdx.dev/) を使う場合:
 
 ```sh
-go install github.com/pepabo/xpoint-cli@latest
+mise use -g github:pepabo/xpoint-cli@latest
 ```
 
-または [GitHub Releases](https://github.com/pepabo/xpoint-cli/releases) からバイナリを取得。
+### Windows
+
+PowerShell で最新リリースの `winget-manifest.yaml` をダウンロードし、`winget install --manifest` でインストール:
+
+```powershell
+Invoke-WebRequest -Uri https://github.com/pepabo/xpoint-cli/releases/latest/download/winget-manifest.yaml -OutFile winget-manifest.yaml
+winget install --manifest winget-manifest.yaml
+```
+
+> [!NOTE]
+> `--manifest` を使うには `winget settings` でローカルマニフェストを有効化する必要があります。
+> 管理者権限の PowerShell で `winget settings --enable LocalManifestFiles` を実行してください。
+
+### バイナリを直接ダウンロード
+
+[GitHub Releases](https://github.com/pepabo/xpoint-cli/releases) から対応するバイナリを取得してください。
 
 ## 認証
 
diff --git a/scripts/gen-winget-manifest.sh b/scripts/gen-winget-manifest.sh
new file mode 100755
index 0000000..df7f5e3
--- /dev/null
+++ b/scripts/gen-winget-manifest.sh
@@ -0,0 +1,32 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+if [[ "${TARGET:-}" != "windows_amd64" ]]; then
+  exit 0
+fi
+
+binary_path="${1:?binary path required}"
+version="${2:?version required}"
+output="${3:-dist/winget-manifest.yaml}"
+
+checksum=$(sha256sum "$binary_path" | awk '{print $1}')
+
+mkdir -p "$(dirname "$output")"
+
+cat > "$output" <<EOF
+PackageIdentifier: Pepabo.xpoint-cli
+PackageVersion: ${version}
+PackageLocale: ja-JP
+Publisher: GMO Pepabo Inc,
+PackageName: xpoint-cli
+License: MIT
+ShortDescription: cli tool for X-point
+Installers:
+  - Architecture: x64
+    InstallerType: portable
+    InstallerUrl: https://github.com/pepabo/xpoint-cli/releases/download/v${version}/xp_${version}_windows_amd64.exe
+    InstallerSha256: ${checksum}
+    Commands: [ xp ]
+ManifestType: singleton
+ManifestVersion: 1.12.0
+EOF