diff --git a/Vagrantfile b/Vagrantfile
index ccad054..ca879d8 100644
--- a/Vagrantfile
+++ b/Vagrantfile
@@ -1,13 +1,16 @@
 
 Vagrant.configure("2") do |config|
     # amd64
-    config.vm.box = "generic/ubuntu2110"
+    config.vm.box = "generic/ubuntu2204"
     # arm64
-    # config.vm.box = "nickschuetz/ubuntu-21.10-arm64"
-    config.vm.define :impish
-    config.vm.hostname = "impish"
+    # config.vm.box = "jharoian3/ubuntu-22.04-arm64"
+    config.vm.define :jammy
+    config.vm.hostname = "jammy"
     config.vm.synced_folder ".", "/source"
     config.vm.provision "shell", inline: <<-SHELL
+      # fix DNS problem
+      rm -f /etc/resolv.conf
+      ln -s /run/systemd/resolve/resolv.conf /etc/resolv.conf
       # install llvm:
       export DEBIAN_FRONTEND=noninteractive
       export LLVM_VERSION=13