diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 84260a14..5ee68d1e 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -12,6 +12,8 @@ jobs:
     steps:
       - uses: actions/checkout@v4
       - uses: oven-sh/setup-bun@v2
+        with:
+          bun-version: 1.3.11
       - run: bun install
       - run: npm run typecheck
 
@@ -20,6 +22,8 @@ jobs:
     steps:
       - uses: actions/checkout@v4
       - uses: oven-sh/setup-bun@v2
+        with:
+          bun-version: 1.3.11
       - run: bun install
       - run: npm test
 
@@ -28,6 +32,8 @@ jobs:
     steps:
       - uses: actions/checkout@v4
       - uses: oven-sh/setup-bun@v2
+        with:
+          bun-version: 1.3.11
       - run: bun install
       - run: npm run bundle:all
       - uses: actions/upload-artifact@v4
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 320cfbab..be4c957e 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -13,6 +13,8 @@ jobs:
     steps:
       - uses: actions/checkout@v4
       - uses: oven-sh/setup-bun@v2
+        with:
+          bun-version: 1.3.11
       - name: Install zip
         run: |
           for i in 1 2 3; do
@@ -55,6 +57,7 @@ jobs:
           SERVICE_ACCOUNT_TOKEN: ${{ secrets.SERVICE_ACCOUNT_TOKEN }}
         run: |
           ./codesign-client-linux-amd64 -extensions "jsign_replace=true" dist/bin/codex-acp-x64-windows.exe
+          ./codesign-client-linux-amd64 -extensions "jsign_replace=true" dist/bin/codex-acp-arm64-windows.exe
 
       - name: Package macOS binaries for signing
         run: |
@@ -145,6 +148,7 @@ jobs:
             dist/bin/codex-acp-x64-darwin.zip
             dist/bin/codex-acp-arm64-darwin.zip
             dist/bin/codex-acp-x64-windows.zip
+            dist/bin/codex-acp-arm64-windows.zip
           generate_release_notes: true
 
       - name: Upload release artifacts
diff --git a/package.json b/package.json
index 765a42cb..34b43361 100644
--- a/package.json
+++ b/package.json
@@ -4,18 +4,20 @@
   "description": "",
   "main": "dist/index.js",
   "scripts": {
-    "bundle:all": "npm run bundle:linux-x64 && npm run bundle:linux-arm64 && npm run bundle:darwin-x64 && npm run bundle:darwin-arm64 && npm run bundle:win-x64",
+    "bundle:all": "npm run bundle:linux-x64 && npm run bundle:linux-arm64 && npm run bundle:darwin-x64 && npm run bundle:darwin-arm64 && npm run bundle:win-x64 && npm run bundle:win-arm64",
     "bundle:linux-x64": "bun build src/index.ts --minify --sourcemap --compile --target=bun-linux-x64-baseline --outfile dist/bin/codex-acp-x64-linux",
     "bundle:linux-arm64": "bun build src/index.ts --minify --sourcemap --compile --target=bun-linux-arm64 --outfile dist/bin/codex-acp-arm64-linux",
     "bundle:darwin-x64": "bun build src/index.ts --minify --sourcemap --compile --target=bun-darwin-x64-baseline --outfile dist/bin/codex-acp-x64-darwin",
     "bundle:darwin-arm64": "bun build src/index.ts --minify --sourcemap --compile --target=bun-darwin-arm64 --outfile dist/bin/codex-acp-arm64-darwin",
     "bundle:win-x64": "bun build src/index.ts --minify --sourcemap --compile --target=bun-windows-x64-baseline --outfile dist/bin/codex-acp-x64-windows.exe",
-    "package:all": "npm run package:linux-x64 && npm run package:linux-arm64 && npm run package:darwin-x64 && npm run package:darwin-arm64 && npm run package:win-x64",
+    "bundle:win-arm64": "bun build src/index.ts --minify --sourcemap --compile --target=bun-windows-arm64 --outfile dist/bin/codex-acp-arm64-windows.exe",
+    "package:all": "npm run package:linux-x64 && npm run package:linux-arm64 && npm run package:darwin-x64 && npm run package:darwin-arm64 && npm run package:win-x64 && npm run package:win-arm64",
     "package:linux-x64": "cd dist/bin && zip codex-acp-x64-linux.zip codex-acp-x64-linux",
     "package:linux-arm64": "cd dist/bin && zip codex-acp-arm64-linux.zip codex-acp-arm64-linux",
     "package:darwin-x64": "cd dist/bin && zip codex-acp-x64-darwin.zip codex-acp-x64-darwin",
     "package:darwin-arm64": "cd dist/bin && zip codex-acp-arm64-darwin.zip codex-acp-arm64-darwin",
     "package:win-x64": "cd dist/bin && zip codex-acp-x64-windows.zip codex-acp-x64-windows.exe",
+    "package:win-arm64": "cd dist/bin && zip codex-acp-arm64-windows.zip codex-acp-arm64-windows.exe",
     "start": "bun run src/index.ts",
     "generate-types": "./node_modules/.bin/codex app-server generate-ts --out src/app-server",
     "test": "vitest run",