diff --git a/.github/workflows/build-binaries.yml b/.github/workflows/build-binaries.yml
index 15218e0..506b5a5 100644
--- a/.github/workflows/build-binaries.yml
+++ b/.github/workflows/build-binaries.yml
@@ -2,7 +2,12 @@ name: Build binaries
 
 # Freezes a standalone `becwright` binary per platform with PyInstaller.
 # These artifacts are what the npm packages ship, so users without Python can
-# install becwright via npm/pnpm. Release publishing is wired in publish.yml.
+# install becwright via npm/pnpm. Release publishing is wired in release.yml.
+#
+# macOS is built once as a universal2 binary (Intel + Apple Silicon) on the
+# Apple Silicon runner, then served for both the darwin-arm64 and darwin-x64 npm
+# packages — GitHub's Intel macOS runners are unreliable, so we don't depend on
+# them.
 on:
   workflow_dispatch:
   workflow_call: # invoked by release.yml on a published release
@@ -17,17 +22,46 @@ jobs:
         include:
           - { os: ubuntu-latest, target: linux-x64, ext: "" }
           - { os: ubuntu-24.04-arm, target: linux-arm64, ext: "" }
-          - { os: macos-14, target: darwin-arm64, ext: "" }
+          - { os: macos-14, target: darwin-universal2, ext: "" }
           - { os: windows-latest, target: win32-x64, ext: ".exe" }
     steps:
       - uses: actions/checkout@v4
-      - uses: actions/setup-python@v5
+
+      # --- Standard build (Linux / Windows): host-arch binary ---
+      - name: Set up Python
+        if: matrix.target != 'darwin-universal2'
+        uses: actions/setup-python@v5
         with:
           python-version: "3.12"
       - name: Install
+        if: matrix.target != 'darwin-universal2'
         run: pip install ".[build]"
       - name: Build
+        if: matrix.target != 'darwin-universal2'
         run: pyinstaller --clean --noconfirm packaging/becwright.spec
+
+      # --- macOS universal2 build (Intel + Apple Silicon in one binary) ---
+      # setup-python is arch-specific, so use the python.org universal2 framework
+      # build. pyyaml ships an arch-specific C extension; drop it so the bundle is
+      # pure-Python and the result is cleanly universal2 (becwright only needs
+      # yaml.safe_load/dump, which the pure-Python loader provides).
+      - name: Build universal2 (macOS)
+        if: matrix.target == 'darwin-universal2'
+        env:
+          BECWRIGHT_TARGET_ARCH: universal2
+          PYVER: "3.12.8"
+        run: |
+          set -euo pipefail
+          curl -sSLo /tmp/python.pkg "https://www.python.org/ftp/python/${PYVER}/python-${PYVER}-macos11.pkg"
+          sudo installer -pkg /tmp/python.pkg -target /
+          PY=/Library/Frameworks/Python.framework/Versions/3.12/bin/python3
+          "$PY" -m pip install --upgrade pip
+          "$PY" -m pip install ".[build]"
+          SITE="$("$PY" -c 'import sysconfig; print(sysconfig.get_paths()["purelib"])')"
+          find "$SITE" -name "_yaml*.so" -delete || true
+          "$PY" -m PyInstaller --clean --noconfirm packaging/becwright.spec
+          echo "--- lipo ---"; lipo -info dist/becwright
+
       - name: Smoke test
         shell: bash
         run: |
@@ -39,6 +73,16 @@ jobs:
             echo "forbid should have exited non-zero on a match"; exit 1
           fi
           echo "frozen 'run' dispatch works"
+
+      - name: Smoke test Intel slice via Rosetta (macOS universal2)
+        if: matrix.target == 'darwin-universal2'
+        run: |
+          set -euo pipefail
+          softwareupdate --install-rosetta --agree-to-license || true
+          arch -x86_64 dist/becwright --version
+          arch -x86_64 dist/becwright list >/dev/null
+          echo "Intel slice runs under Rosetta"
+
       - uses: actions/upload-artifact@v4
         with:
           name: becwright-${{ matrix.target }}
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 6f75fa6..93a4275 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -28,7 +28,9 @@ jobs:
         run: |
           node npm/stage.mjs linux-x64    artifacts/becwright-linux-x64/becwright
           node npm/stage.mjs linux-arm64  artifacts/becwright-linux-arm64/becwright
-          node npm/stage.mjs darwin-arm64 artifacts/becwright-darwin-arm64/becwright
+          # One universal2 macOS binary serves both Apple Silicon and Intel.
+          node npm/stage.mjs darwin-arm64 artifacts/becwright-darwin-universal2/becwright
+          node npm/stage.mjs darwin-x64   artifacts/becwright-darwin-universal2/becwright
           node npm/stage.mjs win32-x64    artifacts/becwright-win32-x64/becwright.exe
       - name: Set version from tag
         run: node npm/set-version.mjs "${GITHUB_REF_NAME#v}"
diff --git a/README.es.md b/README.es.md
index 154f6fd..257e793 100644
--- a/README.es.md
+++ b/README.es.md
@@ -65,7 +65,7 @@ becwright init                      # detecta tu lenguaje, escribe .bec/rules.ya
 
 Instalado como devDependency, el hook de pre-commit resuelve el binario local
 desde `node_modules/.bin`, así funciona sin instalación global. Los paquetes npm
-cubren `linux-x64`, `linux-arm64`, `darwin-arm64` y `win32-x64`; en
+cubren `linux-x64`, `linux-arm64`, `darwin-x64`, `darwin-arm64` y `win32-x64`; en
 cualquier otra plataforma usá `pipx install becwright`.
 
 Comandos disponibles:
diff --git a/README.md b/README.md
index d624f5b..434a09e 100644
--- a/README.md
+++ b/README.md
@@ -64,7 +64,7 @@ becwright init                      # detects your language, writes .bec/rules.y
 
 Installed as a devDependency, the pre-commit hook resolves the local binary from
 `node_modules/.bin`, so it works without a global install. The npm packages cover
-`linux-x64`, `linux-arm64`, `darwin-arm64` and `win32-x64`; on any
+`linux-x64`, `linux-arm64`, `darwin-x64`, `darwin-arm64` and `win32-x64`; on any
 other platform use `pipx install becwright`.
 
 Available commands:
diff --git a/documentation/releasing.es.md b/documentation/releasing.es.md
index 133f4f5..fa30709 100644
--- a/documentation/releasing.es.md
+++ b/documentation/releasing.es.md
@@ -3,7 +3,7 @@
 becwright se distribuye por tres canales desde un único release de GitHub:
 
 - **PyPI** — el paquete de Python (`pip` / `pipx`).
-- **npm** — un paquete lanzador (`becwright`) más cuatro paquetes por plataforma
+- **npm** — un paquete lanzador (`becwright`) más cinco paquetes por plataforma
   con `os`/`cpu` (`@becwright/<target>`), cada uno con un binario precompilado,
   para que quien no usa Python pueda instalarlo.
 
@@ -24,7 +24,7 @@ becwright se distribuye por tres canales desde un único release de GitHub:
 2. Commit y crear un **release de GitHub** con tag `vX.Y.Z` (debe coincidir con
    `pyproject.toml`).
 3. Publicar el release dispara `release.yml`, que:
-   - construye y prueba el binario en las cuatro plataformas,
+   - construye y prueba el binario en todas las plataformas (macOS como binario universal2),
    - stagea cada binario en su paquete `@becwright/<target>` (`npm/stage.mjs`),
    - fija la versión de cada paquete npm desde el tag (`npm/set-version.mjs`),
    - publica primero los paquetes de plataforma y luego el lanzador,
diff --git a/documentation/releasing.md b/documentation/releasing.md
index aa7e28b..64ba4b3 100644
--- a/documentation/releasing.md
+++ b/documentation/releasing.md
@@ -3,7 +3,7 @@
 becwright ships through three channels from a single GitHub release:
 
 - **PyPI** — the Python package (`pip` / `pipx`).
-- **npm** — a launcher package (`becwright`) plus four `os`/`cpu`-gated platform
+- **npm** — a launcher package (`becwright`) plus five `os`/`cpu`-gated platform
   packages (`@becwright/<target>`) that each carry a prebuilt binary, so users
   without Python can install it.
 
@@ -23,7 +23,7 @@ becwright ships through three channels from a single GitHub release:
 2. Commit, then create a **GitHub release** whose tag is `vX.Y.Z` (must match
    `pyproject.toml`).
 3. Publishing the release triggers `release.yml`, which:
-   - builds and smoke-tests the binary on all four platforms,
+   - builds and smoke-tests the binary on all platforms (macOS as a universal2 binary),
    - stages each binary into its `@becwright/<target>` package
      (`npm/stage.mjs`),
    - sets every npm package version from the tag (`npm/set-version.mjs`),
diff --git a/npm/becwright/README.md b/npm/becwright/README.md
index 7e21532..d87b919 100644
--- a/npm/becwright/README.md
+++ b/npm/becwright/README.md
@@ -34,7 +34,7 @@ local binary from `node_modules/.bin`, so it works without a global install.
 
 ## Supported platforms
 
-`linux-x64`, `linux-arm64`, `darwin-arm64`, `win32-x64`. Intel macOS: use `pipx install becwright`.
+`linux-x64`, `linux-arm64`, `darwin-x64`, `darwin-arm64`, `win32-x64` (macOS is a universal2 binary).
 
 On other platforms, install via [pipx](https://pipx.pypa.io): `pipx install becwright`.
 
diff --git a/npm/becwright/bin/becwright.js b/npm/becwright/bin/becwright.js
index 4e8779e..7678e0f 100755
--- a/npm/becwright/bin/becwright.js
+++ b/npm/becwright/bin/becwright.js
@@ -22,8 +22,8 @@ function resolveBinary() {
 const binary = resolveBinary();
 if (!binary) {
   console.error(`becwright: no prebuilt binary for ${TARGET}.`);
-  console.error("Supported: linux-x64, linux-arm64, darwin-arm64, win32-x64.");
-  console.error("On other platforms (e.g. Intel macOS) install via pipx: pipx install becwright");
+  console.error("Supported: linux-x64, linux-arm64, darwin-x64, darwin-arm64, win32-x64.");
+  console.error("On other platforms install via pipx: pipx install becwright");
   process.exit(1);
 }
 
diff --git a/npm/becwright/package.json b/npm/becwright/package.json
index 1d4f3c1..8fa491b 100644
--- a/npm/becwright/package.json
+++ b/npm/becwright/package.json
@@ -1,6 +1,6 @@
 {
   "name": "becwright",
-  "version": "0.1.0",
+  "version": "0.2.1",
   "description": "Deterministically enforces constraints (BECs) on your code, blocking commits that violate them. No Python required.",
   "bin": {
     "becwright": "bin/becwright.js"
@@ -25,9 +25,10 @@
     "node": ">=16"
   },
   "optionalDependencies": {
-    "@becwright/linux-x64": "0.1.0",
-    "@becwright/linux-arm64": "0.1.0",
-    "@becwright/darwin-arm64": "0.1.0",
-    "@becwright/win32-x64": "0.1.0"
+    "@becwright/linux-x64": "0.2.1",
+    "@becwright/linux-arm64": "0.2.1",
+    "@becwright/darwin-x64": "0.2.1",
+    "@becwright/darwin-arm64": "0.2.1",
+    "@becwright/win32-x64": "0.2.1"
   }
 }
diff --git a/npm/platforms/darwin-arm64/package.json b/npm/platforms/darwin-arm64/package.json
index 75c5e94..70f3d41 100644
--- a/npm/platforms/darwin-arm64/package.json
+++ b/npm/platforms/darwin-arm64/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@becwright/darwin-arm64",
-  "version": "0.1.0",
+  "version": "0.2.1",
   "description": "macOS arm64 (Apple Silicon) binary for becwright.",
   "os": [
     "darwin"
diff --git a/npm/platforms/darwin-x64/package.json b/npm/platforms/darwin-x64/package.json
new file mode 100644
index 0000000..b350ffb
--- /dev/null
+++ b/npm/platforms/darwin-x64/package.json
@@ -0,0 +1,16 @@
+{
+  "name": "@becwright/darwin-x64",
+  "version": "0.2.1",
+  "description": "macOS x64 (Intel) binary for becwright.",
+  "os": [
+    "darwin"
+  ],
+  "cpu": [
+    "x64"
+  ],
+  "files": [
+    "becwright"
+  ],
+  "license": "MIT",
+  "homepage": "https://github.com/DataDave-Dev/becwright"
+}
diff --git a/npm/platforms/linux-arm64/package.json b/npm/platforms/linux-arm64/package.json
index c581796..2376213 100644
--- a/npm/platforms/linux-arm64/package.json
+++ b/npm/platforms/linux-arm64/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@becwright/linux-arm64",
-  "version": "0.1.0",
+  "version": "0.2.1",
   "description": "Linux arm64 binary for becwright.",
   "os": [
     "linux"
diff --git a/npm/platforms/linux-x64/package.json b/npm/platforms/linux-x64/package.json
index 2e2c317..4298db1 100644
--- a/npm/platforms/linux-x64/package.json
+++ b/npm/platforms/linux-x64/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@becwright/linux-x64",
-  "version": "0.1.0",
+  "version": "0.2.1",
   "description": "Linux x64 binary for becwright.",
   "os": [
     "linux"
diff --git a/npm/platforms/win32-x64/package.json b/npm/platforms/win32-x64/package.json
index 63844cb..f9c34b1 100644
--- a/npm/platforms/win32-x64/package.json
+++ b/npm/platforms/win32-x64/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@becwright/win32-x64",
-  "version": "0.1.0",
+  "version": "0.2.1",
   "description": "Windows x64 binary for becwright.",
   "os": [
     "win32"
diff --git a/packaging/becwright.spec b/packaging/becwright.spec
index 417689c..9cb0e13 100644
--- a/packaging/becwright.spec
+++ b/packaging/becwright.spec
@@ -12,6 +12,10 @@ entry = os.path.join(SPECPATH, "becwright_entry.py")  # noqa: F821
 # PyInstaller's static analysis cannot find them. Collect them all explicitly.
 hiddenimports = collect_submodules("becwright.checks")
 
+# On macOS we build a single universal2 binary (Intel + Apple Silicon) by setting
+# BECWRIGHT_TARGET_ARCH=universal2 in CI; elsewhere it stays the host arch.
+target_arch = os.environ.get("BECWRIGHT_TARGET_ARCH") or None
+
 a = Analysis(
     [entry],
     pathex=[os.path.join(root, "src")],
@@ -41,7 +45,7 @@ exe = EXE(
     console=True,
     disable_windowed_traceback=False,
     argv_emulation=False,
-    target_arch=None,
+    target_arch=target_arch,
     codesign_identity=None,
     entitlements_file=None,
 )