diff --git a/Dockerfile b/Dockerfile
index 074a5ff..eee76c2 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM ubuntu:20.04
+FROM ubuntu:22.04
 
 ARG docker_version="20.10.17"
 
diff --git a/Vagrantfile b/Vagrantfile
index 3147eac..5ce177c 100644
--- a/Vagrantfile
+++ b/Vagrantfile
@@ -7,8 +7,8 @@ ENV['VAGRANT_NO_PARALLEL']="true"
 
 Vagrant.configure('2') do |config|
 
-  #config.vm.box = "chaifeng/ubuntu-22.04-docker-#{(`uname -m`.strip == "arm64")?"20.10.17-arm64":"19.03.13"}"
-  config.vm.box = "chaifeng/ubuntu-20.04-docker-#{(`uname -m`.strip == "arm64")?"19.03.13-arm64":"19.03.13"}"
+  config.vm.box = "chaifeng/ubuntu-22.04-docker-#{(`uname -m`.strip == "arm64")?"20.10.17-arm64":"19.03.13"}"
+  #config.vm.box = "chaifeng/ubuntu-20.04-docker-#{(`uname -m`.strip == "arm64")?"19.03.13-arm64":"19.03.13"}"
 
   config.vm.provider 'virtualbox' do |vb|
     vb.memory = '1024'
@@ -85,10 +85,10 @@ Vagrant.configure('2') do |config|
 
     master.vm.provision "docker-build-ufw-docker-agent", preserve_order: true, type: 'shell', inline: <<-SHELL
       set -euo pipefail
-      docker build -t #{ufw_docker_agent_image}-legacy /vagrant
-      docker push #{ufw_docker_agent_image}-legacy
+      docker build -t #{ufw_docker_agent_image}-nf_tables /vagrant
+      docker push #{ufw_docker_agent_image}-nf_tables
 
-      echo "export UFW_DOCKER_AGENT_IMAGE=#{ufw_docker_agent_image}-nf_tables" > /etc/profile.d/ufw-docker.sh
+      echo "export UFW_DOCKER_AGENT_IMAGE=#{ufw_docker_agent_image}-legacy" > /etc/profile.d/ufw-docker.sh
       echo "export DEBUG=true" >> /etc/profile.d/ufw-docker.sh
 
       echo "Defaults env_keep += UFW_DOCKER_AGENT_IMAGE" > /etc/sudoers.d/98_ufw-docker
diff --git a/ufw-docker b/ufw-docker
index e346a7b..bc8a787 100755
--- a/ufw-docker
+++ b/ufw-docker
@@ -11,7 +11,7 @@ GREP_REGEXP_INSTANCE_NAME="[-_.[:alnum:]]\\+"
 DEFAULT_PROTO=tcp
 
 ufw_docker_agent=ufw-docker-agent
-ufw_docker_agent_image="${UFW_DOCKER_AGENT_IMAGE:-chaifeng/${ufw_docker_agent}:220920-legacy}"
+ufw_docker_agent_image="${UFW_DOCKER_AGENT_IMAGE:-chaifeng/${ufw_docker_agent}:220920-nf_tables}"
 
 if [[ "${ufw_docker_agent_image}" = *-@(legacy|nf_tables) ]]; then
     if iptables --version | grep -F '(legacy)' &>/dev/null; then