diff --git a/.github/workflows/nomploy.yml b/.github/workflows/nomploy.yml
index 8dd212bed..6cc521221 100644
--- a/.github/workflows/nomploy.yml
+++ b/.github/workflows/nomploy.yml
@@ -21,11 +21,17 @@ permissions:
 jobs:
   build-and-push:
     runs-on: ubuntu-latest
-    timeout-minutes: 60
+    timeout-minutes: 120
     steps:
       - name: Checkout
         uses: actions/checkout@v4
 
+      # QEMU lets a single amd64 runner also build the arm64 image (emulated).
+      # Simpler and plan-independent; slower than native arm runners. For faster
+      # builds, split into native amd64 + ubuntu-24.04-arm jobs with a manifest.
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v3
+
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v3
 
@@ -61,9 +67,7 @@ jobs:
         uses: docker/build-push-action@v6
         with:
           context: .
-          # arm64 can be added here (needs QEMU or an arm runner; slower build):
-          #   platforms: linux/amd64,linux/arm64
-          platforms: linux/amd64
+          platforms: linux/amd64,linux/arm64
           push: true
           tags: ${{ steps.meta.outputs.tags }}
           labels: ${{ steps.meta.outputs.labels }}