diff --git a/.github/workflows/build-syncthing-macos-debug-dmg-on-demand.yml b/.github/workflows/build-syncthing-macos-debug-dmg-on-demand.yml
new file mode 100644
index 0000000..d827257
--- /dev/null
+++ b/.github/workflows/build-syncthing-macos-debug-dmg-on-demand.yml
@@ -0,0 +1,23 @@
+name: Build Syncthing macOS Debug DMG (On-Demand)
+
+on:
+  workflow_dispatch:
+
+jobs:
+  build-debug-dmg:
+    name: Build Debug DMG
+    runs-on: macos-12
+    steps:
+      - uses: actions/checkout@v3
+        with:
+          fetch-depth: 0
+
+      - name: Build debug target
+        run: |
+          make debug-dmg
+
+      - name: Archive artifacts
+        uses: actions/upload-artifact@v3
+        with:
+          name: syncthing-macos-dmg-debug-dmg
+          path: Build/Products/Debug/*.dmg