diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 4dee9343..3b565b6b 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -11,6 +11,8 @@ jobs:
         run: |
           sudo apt install xz-utils
           sudo sh -c 'wget -c https://ziglang.org/builds/zig-linux-x86_64-0.9.0-dev.347+628f490c5.tar.xz -O - | tar -xJ --strip-components=1 -C /usr/local/bin'
+      - name: mach::test cross Linux->MacOS
+        run: zig build test -Dtarget=x86_64-macos
       - name: mach::test
         run: zig build test
       - name: webgpu::test