diff --git a/.travis.yml b/.travis.yml
index 53e24b3..19052d1 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -4,10 +4,14 @@ os:
 - linux
 - windows
 - osx
+arch:
+- amd64
+- arm64
 env:
 - PY_VER=3.6
 - PY_VER=3.7
-- PY_VER=3.5
+- PY_VER=3.8
+- PY_VER=3.9
 osx_image: xcode8.3
 matrix:
   exclude:
diff --git a/multibuild.sh b/multibuild.sh
index c5b50fa..f8e4837 100755
--- a/multibuild.sh
+++ b/multibuild.sh
@@ -3,8 +3,14 @@ export REPO_DIR=.
 export BUILD_COMMIT=$TRAVIS_COMMIT
 export PLAT=x86_64
 export MB_PYTHON_VERSION=$PY_VER
+export MB_ML_VER=2014
+if [[ $TRAVIS_CPU_ARCH == "arm64" ]]
+then
+  export PLAT=aarch64
+  export DOCKER_TEST_IMAGE=multibuild/xenial_arm64v8
+fi
 
-git clone https://github.com/matthew-brett/multibuild && cd multibuild && git checkout 254ad28 && cd ..
+git clone https://github.com/matthew-brett/multibuild && cd multibuild && git checkout 45d97819e7d39dd2264b2c3cd353c26c4e1ebb74 && cd ..
 source multibuild/common_utils.sh
 source multibuild/travis_steps.sh
 before_install