diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 5c9d6c08b1..d6971dcc33 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -71,7 +71,7 @@ jobs:
             pyver: cp312-cp312
             piparch: manylinux2014_x86_64
 
-          # Linux py builds x64
+          # Linux py builds x32
           - name: linux 2.7 i686
             os: ubuntu-latest
             pyver: cp27-cp27m
@@ -116,6 +116,13 @@ jobs:
 
           # numpy builds for >=3.10 do no include i686
 
+          # Linux py builds aarch64
+          - name: linux 3.12 aarch64
+            os: ubuntu-latest
+            pyver: cp312-cp312
+            piparch: manylinux2014_aarch64
+            platform: arm64
+
           # OSX py builds
           - name: osx 3.6 intel
             os: macos-latest
@@ -247,6 +254,12 @@ jobs:
           python -c 'import epicscorelibs; print("IMPORT", epicscorelibs.__file__)'
           python -m nose2 -v epicscorelibs
 
+      - name: Set up QEMU
+        if: matrix.platform
+        uses: docker/setup-qemu-action@v2
+        with:
+          platforms: ${{ matrix.platform }}
+
       - name: Docker PY build
         if: matrix.pyver && !matrix.source
         run: |
@@ -278,7 +291,10 @@ jobs:
           cat runit.sh
           chmod +x runit.sh
           docker pull quay.io/pypa/${{ matrix.piparch }}
-          docker run --rm -v `pwd`:/io quay.io/pypa/${{ matrix.piparch }} ${{ matrix.pre }} /io/runit.sh
+          docker run \
+            --platform linux/${{ matrix.platform || 'amd64' }}
+            --rm -v `pwd`:/io \
+            quay.io/pypa/${{ matrix.piparch }} ${{ matrix.pre }} /io/runit.sh
 
       - name: List Artifacts
         run: ls dist/*