diff --git a/.github/workflows/test-mix.yml b/.github/workflows/test-mix.yml
index b479085..a010696 100644
--- a/.github/workflows/test-mix.yml
+++ b/.github/workflows/test-mix.yml
@@ -24,11 +24,23 @@ jobs:
       - name: Checkout code
         uses: actions/checkout@v2
 
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v1
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v1
+
       - name: Build mix image
+        uses: docker/build-push-action@v2
+        with:
+          platforms: linux/amd64,linux/arm64,linux/arm/v7
         run: |
             (cd mix && docker build -t ejabberd/mix .)
 
       - name: Build ecs image
+        uses: docker/build-push-action@v2
+        with:
+          platforms: linux/amd64,linux/arm64,linux/arm/v7
         run: |
             cd ecs
             ./build.sh latest