diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 3d239eb3..9bca438f 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -113,7 +113,9 @@ jobs:
           CI: ''
 
       - name: Build Electron App
-        run: yarn electron:build:mac
+        # Use --dir to build only the .app bundle without DMG
+        # This avoids flaky hdiutil "Resource busy" errors in CI
+        run: yarn build && yarn build:preload && electron-builder build --publish never -m --dir
 
       - name: Smoke Test
         run: |
@@ -187,7 +189,9 @@ jobs:
 
       - name: Build Electron App
         # On M1 runner, this should produce arm64 build
-        run: yarn electron:build:mac
+        # Use --dir to build only the .app bundle without DMG
+        # This avoids flaky hdiutil "Resource busy" errors in CI
+        run: yarn build && yarn build:preload && electron-builder build --publish never -m --dir
 
       - name: Smoke Test
         run: |