diff --git a/.github/workflows/wheels.yml b/.github/workflows/wheels.yml
index eff779006..7ba9e3814 100644
--- a/.github/workflows/wheels.yml
+++ b/.github/workflows/wheels.yml
@@ -12,12 +12,19 @@ jobs:
   linux:
     name: Linux
     runs-on: ubuntu-20.04
+    strategy:
+      matrix:
+        arch: [x86_64, aarch64]
     steps:
     - name: Checkout pygit2
       uses: actions/checkout@v2
 
+    - name: Set up QEMU
+      if: ${{ matrix.arch == 'aarch64' }}
+      uses: docker/setup-qemu-action@v1
+
     - run: |
-        /bin/sh travis/build-all-manylinux-wheels.sh
+        /bin/sh travis/build-all-manylinux-wheels.sh ${{ matrix.arch }}
 
     - name: Save wheels
       uses: actions/upload-artifact@v2
diff --git a/travis/build-all-manylinux-wheels.sh b/travis/build-all-manylinux-wheels.sh
index 855e2a030..45ac120e4 100755
--- a/travis/build-all-manylinux-wheels.sh
+++ b/travis/build-all-manylinux-wheels.sh
@@ -3,8 +3,14 @@
 set -x
 set -e
 
+ARCH=$1
+
 # Wait for docker pull to complete downloading container
-manylinux_image="ghcr.io/pyca/cryptography-manylinux2014:x86_64"
+if [ $ARCH = 'aarch64' ]; then
+  manylinux_image="ghcr.io/pyca/cryptography-manylinux2014_${ARCH}"
+else
+  manylinux_image="ghcr.io/pyca/cryptography-manylinux2014:${ARCH}"
+fi
 docker pull "${manylinux_image}" &
 wait
 
diff --git a/travis/build-manylinux-wheels.sh b/travis/build-manylinux-wheels.sh
index 24f709c22..7ce53262c 100755
--- a/travis/build-manylinux-wheels.sh
+++ b/travis/build-manylinux-wheels.sh
@@ -10,8 +10,13 @@ export CFLAGS="-fPIC"
 export PKG_CONFIG_PATH="${OPENSSL_PATH}/lib/pkgconfig:${PYCA_OPENSSL_PATH}/lib/pkgconfig"
 
 # Install requirements
-yum -y install git libffi-devel cmake3
+yum -y install git libffi-devel
 yum -y install openssl wget
+if [ ${ARCH} == 'aarch64' ]; then
+  yum -y install cmake
+else
+  yum -y install cmake3
+fi
 
 # Copy source directory so we don't mangle with it
 SRC_DIR=/io/src