diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 868d9a5..ec2760b 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -40,7 +40,6 @@ jobs:
         platform:
           - x86_64-linux
           - aarch64-linux
-          - arm64-darwin
     steps:
       - uses: actions/checkout@v6
 
@@ -57,8 +56,77 @@ jobs:
           path: pkg/*.gem
           if-no-files-found: error
 
+  # arm64-darwin cannot use rb-sys-dock: BoringSSL cross-compilation fails because
+  # CMake picks up /usr/bin/ld (ELF) instead of the osxcross Mach-O linker.
+  # No upstream project (wreq, rnet, boring) cross-compiles BoringSSL for Darwin.
+  native-darwin:
+    name: Build native gem (arm64-darwin)
+    runs-on: macos-latest
+    steps:
+      - uses: actions/checkout@v6
+
+      - uses: dtolnay/rust-toolchain@stable
+
+      - uses: Swatinem/rust-cache@v2
+        with:
+          prefix-key: macos-arm64
+          shared-key: release
+
+      # Compile per-Ruby-version binaries (matching rb-sys-dock behavior on Linux).
+      # BoringSSL is compiled once and cached; only rb-sys/magnus rebuild per version.
+      - uses: ruby/setup-ruby@v1
+        with:
+          ruby-version: "3.3"
+          bundler-cache: true
+
+      - name: Compile for Ruby 3.3
+        env:
+          RB_SYS_CARGO_PROFILE: release
+        run: |
+          cargo clean -p rb-sys -p magnus -p serde_magnus -p wreq-ruby --release 2>/dev/null || true
+          bundle exec rake compile
+          mkdir -p lib/wreq_ruby/3.3
+          cp lib/wreq_ruby/wreq_ruby.bundle lib/wreq_ruby/3.3/
+
+      - uses: ruby/setup-ruby@v1
+        with:
+          ruby-version: "3.4"
+          bundler-cache: true
+
+      - name: Compile for Ruby 3.4
+        env:
+          RB_SYS_CARGO_PROFILE: release
+        run: |
+          cargo clean -p rb-sys -p magnus -p serde_magnus -p wreq-ruby --release
+          bundle exec rake compile
+          mkdir -p lib/wreq_ruby/3.4
+          cp lib/wreq_ruby/wreq_ruby.bundle lib/wreq_ruby/3.4/
+
+      - uses: ruby/setup-ruby@v1
+        with:
+          ruby-version: "4.0"
+          bundler-cache: true
+
+      - name: Compile for Ruby 4.0
+        env:
+          RB_SYS_CARGO_PROFILE: release
+        run: |
+          cargo clean -p rb-sys -p magnus -p serde_magnus -p wreq-ruby --release
+          bundle exec rake compile
+          mkdir -p lib/wreq_ruby/4.0
+          cp lib/wreq_ruby/wreq_ruby.bundle lib/wreq_ruby/4.0/
+
+      - name: Build platform gem
+        run: ruby script/build_platform_gem.rb arm64-darwin
+
+      - uses: actions/upload-artifact@v4
+        with:
+          name: native-gem-arm64-darwin
+          path: pkg/*arm64-darwin*.gem
+          if-no-files-found: error
+
   smoke-test:
-    name: Smoke test (Ruby ${{ matrix.ruby }})
+    name: Smoke test Linux (Ruby ${{ matrix.ruby }})
     needs: [cross-compile]
     runs-on: ubuntu-latest
     strategy:
@@ -81,9 +149,33 @@ jobs:
       - name: Verify gem loads and prints version
         run: ruby -rwreq -e "puts Wreq::VERSION"
 
+  smoke-test-darwin:
+    name: Smoke test macOS (Ruby ${{ matrix.ruby }})
+    needs: [native-darwin]
+    runs-on: macos-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        ruby: ["3.3", "3.4", "4.0"]
+    steps:
+      - uses: ruby/setup-ruby@v1
+        with:
+          ruby-version: ${{ matrix.ruby }}
+
+      - uses: actions/download-artifact@v4
+        with:
+          name: native-gem-arm64-darwin
+          path: pkg/
+
+      - name: Install native gem
+        run: gem install pkg/wreq-*-arm64-darwin.gem
+
+      - name: Verify gem loads and prints version
+        run: ruby -rwreq -e "puts Wreq::VERSION"
+
   release:
     name: Release
-    needs: [source-gem, cross-compile, smoke-test]
+    needs: [source-gem, cross-compile, native-darwin, smoke-test, smoke-test-darwin]
     runs-on: ubuntu-latest
     if: startsWith(github.ref, 'refs/tags/v')
     permissions:
@@ -102,7 +194,7 @@ jobs:
       - uses: actions/download-artifact@v4
         with:
           path: pkg/
-          pattern: "{cross-gem-*,source-gem}"
+          pattern: "{cross-gem-*,native-gem-*,source-gem}"
           merge-multiple: true
 
       - name: List gems
diff --git a/Rakefile b/Rakefile
index 8477cb2..e4e61eb 100644
--- a/Rakefile
+++ b/Rakefile
@@ -18,10 +18,10 @@ RbSys::ExtensionTask.new(CRATE_PACKAGE_NAME, GEMSPEC) do |ext|
   ext.ext_dir = "."
   ext.lib_dir = "lib/wreq_ruby"
   ext.cross_compile = true
+  # arm64-darwin is built natively on macOS (see .github/workflows/release.yml)
   ext.cross_platform = %w[
     x86_64-linux
     aarch64-linux
-    arm64-darwin
   ]
 
   # Override Ruby version for native gems (keep in sync with wreq.gemspec)
diff --git a/script/build_platform_gem.rb b/script/build_platform_gem.rb
new file mode 100644
index 0000000..579d28f
--- /dev/null
+++ b/script/build_platform_gem.rb
@@ -0,0 +1,34 @@
+#!/usr/bin/env ruby
+# frozen_string_literal: true
+
+# Build a platform-specific gem with pre-compiled native extensions.
+#
+# Usage: ruby script/build_platform_gem.rb PLATFORM
+# Example: ruby script/build_platform_gem.rb arm64-darwin
+#
+# Expects compiled .bundle/.so files in version-specific directories:
+#   lib/wreq_ruby/3.3/wreq_ruby.bundle
+#   lib/wreq_ruby/3.4/wreq_ruby.bundle
+#   lib/wreq_ruby/4.0/wreq_ruby.bundle
+
+require "rubygems/package"
+require "fileutils"
+
+platform = ARGV.fetch(0) { abort "Usage: #{$0} PLATFORM" }
+
+spec = Gem::Specification.load("wreq.gemspec")
+spec.platform = Gem::Platform.new(platform)
+spec.extensions = []
+# Keep in sync with Rakefile cross_compiling block
+spec.required_ruby_version = Gem::Requirement.new(">= 3.3", "< 4.1.dev")
+
+# Add version-specific compiled extensions
+binaries = Dir.glob("lib/wreq_ruby/[0-9]*/*.{bundle,so}")
+abort "No compiled binaries found in lib/wreq_ruby/*/. Did compilation succeed?" if binaries.empty?
+spec.files += binaries
+
+FileUtils.mkdir_p("pkg")
+gem_file = Gem::Package.build(spec)
+FileUtils.mv(gem_file, "pkg/")
+
+puts "Built: pkg/#{File.basename(gem_file)}"