diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 4c76e72ad..94df30f8e 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -434,12 +434,16 @@ jobs:
     runs-on: macos-10.15
     timeout-minutes: 40
     needs: [project, linters, protos, man]
-
+    strategy:
+      matrix:
+        runc: [runc, crun]
     steps:
       - name: Checkout containerd
         uses: actions/checkout@v2
 
       - name: Start vagrant
+        env:
+          RUNC_FLAVOR: ${{ matrix.runc }}
         run: vagrant up
 
       - name: Integration
diff --git a/Vagrantfile b/Vagrantfile
index ad841cd8a..5275c8713 100644
--- a/Vagrantfile
+++ b/Vagrantfile
@@ -26,11 +26,10 @@ Vagrant.configure("2") do |config|
     v.memory = 2048
     v.cpus = 2
   end
-  config.vm.provision "shell", inline: <<-SHELL
+  config.vm.provision "shell", env: {"RUNC_FLAVOR"=>ENV["RUNC_FLAVOR"]}, inline: <<-SHELL
     set -eux -o pipefail
     # configuration
     GO_VERSION="1.13.14"
-    RUNC_FLAVOR="crun"
 
     # install dnf deps
     dnf install -y container-selinux gcc git iptables libseccomp-devel lsof make
@@ -57,7 +56,7 @@ EOF
     cd /root/go/src/github.com/containerd/containerd
 
     # install runc (or crun) and other components
-    RUNC_FLAVOR=$RUNC_FLAVOR ./script/setup/install-runc
+    ./script/setup/install-runc
     ./script/setup/install-cni
     ./script/setup/install-critools