diff --git a/.gitignore b/.gitignore
index 9ca390c..1331d18 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,2 @@
 .kitchen/*
-
+*.pyc
diff --git a/.kitchen.yml b/.kitchen.yml
deleted file mode 100644
index 61fd37f..0000000
--- a/.kitchen.yml
+++ /dev/null
@@ -1,27 +0,0 @@
----
-driver:
-  name: docker_cli
-
-transport:
-  name: docker_cli
-
-provisioner:
-  name: ansible_playbook
-  hosts: localhost
-  require_ansible_repo: false
-  require_ansible_omnibus: false
-  require_chef_for_busser: true
-  ansible_verbose: false
-  ansible_inventory: ./test/integration/inventory
-
-platforms:
-  - name: debian-9
-    driver_config:
-      image: "nishiki/debian9:ansible-<%= ENV['ANSIBLE_VERSION'] ? ENV['ANSIBLE_VERSION'] : '2.6' %>"
-      command: /bin/systemd
-      volume:
-        - /sys/fs/cgroup:/sys/fs/cgroup:ro
-      security_opt: seccomp=unconfined
-
-suites:
-  - name: certbot
diff --git a/.rubocop.yml b/.rubocop.yml
deleted file mode 100644
index 0c8a258..0000000
--- a/.rubocop.yml
+++ /dev/null
@@ -1,38 +0,0 @@
----
-AllCops:
-  Exclude:
-    - db/**/*
-    - config/**/*
-    - Vagrantfile
-  TargetRubyVersion: 2.3
-
-Naming/AccessorMethodName:
-  Enabled: false
-
-Lint/RescueWithoutErrorClass:
-  Enabled: false
-
-Metrics/LineLength:
-  Max: 120
-Metrics/CyclomaticComplexity:
-  Enabled: false
-Metrics/PerceivedComplexity:
-  Enabled: false
-Metrics/MethodLength:
-  Enabled: false
-Metrics/BlockLength:
-  Enabled: false
-Metrics/ClassLength:
-  Enabled: false
-Metrics/AbcSize:
-  Enabled: false
-
-Style/NumericLiteralPrefix:
-  Enabled: false
-Style/FrozenStringLiteralComment:
-  Enabled: false
-Style/CommandLiteral:
-  Enabled: true
-  EnforcedStyle: percent_x
-Style/Documentation:
-  Enabled: false
diff --git a/.travis.yml b/.travis.yml
index e9b84d7..5f2a2f2 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,28 +1,30 @@
 ---
 sudo: required
-language: ruby
+dist: bionic
+addons:
+  apt:
+    packages:
+      - python3
+      - python3-pip
+      - python3-setuptools
 
 env:
-  - ANSIBLE_VERSION=2.5
-  - ANSIBLE_VERSION=2.6
-  - ANSIBLE_VERSION=2.7
+  - ANSIBLE_VERSION=2.9.25
+  - ANSIBLE_VERSION=2.10.7
+  - ANSIBLE_VERSION=3.4.0
+  - ANSIBLE_VERSION=4.4.0
 
 services:
   - docker
 
 before_install:
-  - bundle install
-  - sudo pip install --upgrade pip
-  - sudo pip install yamllint
-  - sudo pip install ansible-lint
+  - sudo pip3 install ansible==${ANSIBLE_VERSION}
+  - sudo pip3 install molecule 'molecule[docker]' docker testinfra ansible-lint yamllint
   - git clone https://github.com/ansible/galaxy-lint-rules.git
 
 script:
-  - kitchen conv certbot-debian-9
-  - kitchen conv certbot-debian-9 | grep changed=0
-  - kitchen verify certbot-debian-9
-  - ansible-lint -r galaxy-lint-rules/rules .
-  - yamllint .
+  - ansible --version
+  - molecule test
 
 notifications:
   webhooks: https://galaxy.ansible.com/api/v1/notifications/
diff --git a/.yamllint b/.yamllint
index b1b703a..72ac1d6 100644
--- a/.yamllint
+++ b/.yamllint
@@ -1,3 +1,4 @@
+---
 extends: default
 
 ignore: |
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 33831b0..811bdb8 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,7 +4,19 @@ This project adheres to [Semantic Versioning](http://semver.org/).
 Which is based on [Keep A Changelog](http://keepachangelog.com/)
 
 ## [Unreleased]
+
+### Added
+
 - test: add check yamllint
+- test: add support debian 11
+
+### Changed
+
+- test: replace kitchen to molecule
+
+### Removed
+
+- test: remove support debian 9
 
 ## [2.1.1] 2018-11-26
 - fix: replace shell module to command
diff --git a/Gemfile b/Gemfile
deleted file mode 100644
index 0d96441..0000000
--- a/Gemfile
+++ /dev/null
@@ -1,8 +0,0 @@
-source 'https://rubygems.org'
-
-group :development do
-  gem 'kitchen-ansible'
-  gem 'kitchen-docker_cli'
-  gem 'rubocop', '0.50.0'
-  gem 'test-kitchen'
-end
diff --git a/Gemfile.lock b/Gemfile.lock
deleted file mode 100644
index 939c635..0000000
--- a/Gemfile.lock
+++ /dev/null
@@ -1,94 +0,0 @@
-GEM
-  remote: https://rubygems.org/
-  specs:
-    ast (2.4.0)
-    builder (3.2.3)
-    erubis (2.7.0)
-    ffi (1.9.23)
-    gssapi (1.2.0)
-      ffi (>= 1.0.1)
-    gyoku (1.3.1)
-      builder (>= 2.1.2)
-    httpclient (2.8.3)
-    kitchen-ansible (0.47.5)
-      net-ssh (>= 3)
-      test-kitchen (~> 1.4)
-    kitchen-docker_cli (0.18.0)
-      test-kitchen (>= 1.3)
-    little-plugger (1.1.4)
-    logging (2.2.2)
-      little-plugger (~> 1.1)
-      multi_json (~> 1.10)
-    mixlib-install (3.6.0)
-      mixlib-shellout
-      mixlib-versioning
-      thor
-    mixlib-shellout (2.3.2)
-    mixlib-versioning (1.2.2)
-    multi_json (1.13.1)
-    net-scp (1.2.1)
-      net-ssh (>= 2.6.5)
-    net-ssh (4.2.0)
-    net-ssh-gateway (1.3.0)
-      net-ssh (>= 2.6.5)
-    nori (2.6.0)
-    parallel (1.12.1)
-    parser (2.5.0.2)
-      ast (~> 2.4.0)
-    powerpack (0.1.1)
-    rainbow (2.2.2)
-      rake
-    rake (12.3.1)
-    rubocop (0.50.0)
-      parallel (~> 1.10)
-      parser (>= 2.3.3.1, < 3.0)
-      powerpack (~> 0.1)
-      rainbow (>= 2.2.2, < 3.0)
-      ruby-progressbar (~> 1.7)
-      unicode-display_width (~> 1.0, >= 1.0.1)
-    ruby-progressbar (1.9.0)
-    rubyntlm (0.6.2)
-    rubyzip (1.2.1)
-    safe_yaml (1.0.4)
-    test-kitchen (1.18.0)
-      mixlib-install (~> 3.6)
-      mixlib-shellout (>= 1.2, < 3.0)
-      net-scp (~> 1.1)
-      net-ssh (>= 2.9, < 5.0)
-      net-ssh-gateway (~> 1.2)
-      safe_yaml (~> 1.0)
-      thor (~> 0.19, < 0.19.2)
-      winrm (~> 2.0)
-      winrm-elevated (~> 1.0)
-      winrm-fs (~> 1.0.2)
-    thor (0.19.1)
-    unicode-display_width (1.3.0)
-    winrm (2.2.3)
-      builder (>= 2.1.2)
-      erubis (~> 2.7)
-      gssapi (~> 1.2)
-      gyoku (~> 1.0)
-      httpclient (~> 2.2, >= 2.2.0.2)
-      logging (>= 1.6.1, < 3.0)
-      nori (~> 2.0)
-      rubyntlm (~> 0.6.0, >= 0.6.1)
-    winrm-elevated (1.1.0)
-      winrm (~> 2.0)
-      winrm-fs (~> 1.0)
-    winrm-fs (1.0.2)
-      erubis (~> 2.7)
-      logging (>= 1.6.1, < 3.0)
-      rubyzip (~> 1.1)
-      winrm (~> 2.0)
-
-PLATFORMS
-  ruby
-
-DEPENDENCIES
-  kitchen-ansible
-  kitchen-docker_cli
-  rubocop (= 0.50.0)
-  test-kitchen
-
-BUNDLED WITH
-   1.16.0
diff --git a/README.md b/README.md
index 4dd28f7..dee9a49 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,5 @@
 # Ansible role: Certbot
+
 [![Version](https://img.shields.io/badge/latest_version-2.1.1-green.svg)](https://git.yaegashi.fr/nishiki/ansible-role-certbot/releases)
 [![Build Status](https://travis-ci.org/nishiki/ansible-role-certbot.svg?branch=master)](https://travis-ci.org/nishiki/ansible-role-certbot)
 [![License](https://img.shields.io/badge/license-Apache--2.0-blue.svg)](https://git.yaegashi.fr/nishiki/ansible-role-certbot/src/branch/master/LICENSE)
@@ -7,8 +8,10 @@ Generate certificate SSL with certbot.
 
 ## Requirements
 
-* Ansible >= 2.5
-* Debian Stretch
+* Ansible >= 2.9
+* Debian
+  * Buster
+  * Bullseye
 
 ## Role variables
 
@@ -27,13 +30,14 @@ Generate certificate SSL with certbot.
 ```
 
 ## Development
-### Tests with docker
 
-  * install [docker](https://docs.docker.com/engine/installation/)
-  * install ruby
-  * install bundler `gem install bundler`
-  * install dependencies `bundle install`
-  * run the tests `kitchen test`
+### Test with molecule and docker
+
+* install [docker](https://docs.docker.com/engine/installation/)
+* install `python3` and `python3-pip`
+* install molecule and dependencies `pip3 install molecule molecule-docker docker ansible-lint pytest-testinfra yamllint`
+* run `molecule test`
+
 
 ## License
 
diff --git a/meta/main.yml b/meta/main.yml
index 6237390..74ad1a9 100644
--- a/meta/main.yml
+++ b/meta/main.yml
@@ -5,11 +5,13 @@ galaxy_info:
   company: Adrien Waksberg
   description: Generate certificate SSL with certbot
   license: Apache2
-  min_ansible_version: 2.5
+  min_ansible_version: 2.9
   platforms:
     - name: Debian
       versions:
-        - stretch
+        - buster
+        - bullseye
+
   galaxy_tags:
     - certbot
     - letsencrypt
diff --git a/test/integration/certbot/default.yml b/molecule/default/converge.yml
similarity index 55%
rename from test/integration/certbot/default.yml
rename to molecule/default/converge.yml
index b413344..d35ce14 100644
--- a/test/integration/certbot/default.yml
+++ b/molecule/default/converge.yml
@@ -1,10 +1,15 @@
 ---
-- hosts: certbot
-  connection: local
+- name: Converge
+  hosts: all
+  roles:
+    - ansible-role-certbot
   vars:
     certbot_role: slave
     certbot_domains:
       - name: test.local
         command: 'echo OK > /tmp/test.txt'
-  roles:
-    - ansible-role-certbot
+
+  pre_tasks:
+    - name: update apt cache
+      ansible.builtin.apt:
+        update_cache: true
diff --git a/molecule/default/molecule.yml b/molecule/default/molecule.yml
new file mode 100644
index 0000000..0507c53
--- /dev/null
+++ b/molecule/default/molecule.yml
@@ -0,0 +1,26 @@
+---
+driver:
+  name: docker
+platforms:
+  - name: debian10
+    image: nishiki/debian10:molecule
+    privileged: true
+    volumes:
+      - /sys/fs/cgroup:/sys/fs/cgroup:ro
+    command: /bin/systemd
+    capabilities:
+      - SYS_ADMIN
+  - name: debian11
+    image: nishiki/debian11:molecule
+    privileged: true
+    volumes:
+      - /sys/fs/cgroup:/sys/fs/cgroup:ro
+    command: /bin/systemd
+    capabilities:
+      - SYS_ADMIN
+lint: |
+  set -e
+  yamllint .
+  ansible-lint .
+verifier:
+  name: testinfra
diff --git a/molecule/default/tests/test_default.py b/molecule/default/tests/test_default.py
new file mode 100644
index 0000000..ecfc127
--- /dev/null
+++ b/molecule/default/tests/test_default.py
@@ -0,0 +1,44 @@
+import testinfra.utils.ansible_runner
+
+def test_packages(host):
+  package = host.package('certbot')
+  assert package.is_installed
+
+def test_acme_directory(host):
+  path = host.file('/var/www/acme')
+  assert path.exists
+  assert path.is_directory
+  assert path.user == 'root'
+  assert path.group == 'root'
+  assert path.mode == 0o755
+
+def test_old_cron_file(host):
+  path = host.file('/etc/cron.d/certbot')
+  assert not path.exists
+
+def test_cron_file(host):
+  path = host.file('/var/spool/cron/crontabs/root')
+  assert path.exists
+  assert path.is_file
+  assert path.user == 'root'
+  assert path.group == 'crontab'
+  assert path.mode == 0o600
+  assert path.contains('--renew-hook /usr/local/bin/certbot-renew')
+
+def test_config_file(host):
+  path = host.file('/etc/letsencrypt/renew.cfg')
+  assert path.exists
+  assert path.is_file
+  assert path.user == 'root'
+  assert path.group == 'root'
+  assert path.mode == 0o644
+  assert path.contains('test.local = echo OK > /tmp/test.txt')
+
+def test_renew(host):
+  cmd = host.run('RENEWED_DOMAINS=test.local /usr/local/bin/certbot-renew')
+  assert cmd.succeeded
+
+  path = host.file('/tmp/test.txt')
+  assert path.exists
+  assert path.is_file
+  assert path.contains('OK')
diff --git a/test/integration/certbot/serverspec/certbot_spec.rb b/test/integration/certbot/serverspec/certbot_spec.rb
deleted file mode 100644
index ede171d..0000000
--- a/test/integration/certbot/serverspec/certbot_spec.rb
+++ /dev/null
@@ -1,47 +0,0 @@
-require 'serverspec'
-
-set :backend, :exec
-
-describe package('certbot') do
-  it { should be_installed }
-end
-
-describe file('/var/www/acme') do
-  it { should exist }
-  it { should be_directory }
-  it { should be_mode 755 }
-  it { should be_owned_by 'root' }
-  it { should be_grouped_into 'root' }
-end
-
-describe file('/etc/cron.d/certbot') do
-  it { should_not exist }
-end
-
-describe file('/var/spool/cron/crontabs/root') do
-  it { should exist }
-  it { should be_file }
-  it { should be_mode 600 }
-  it { should be_owned_by 'root' }
-  it { should be_grouped_into 'crontab' }
-  it { should contain '--renew-hook /usr/local/bin/certbot-renew' }
-end
-
-describe file('/etc/letsencrypt/renew.cfg') do
-  it { should exist }
-  it { should be_file }
-  it { should be_mode 644 }
-  it { should be_owned_by 'root' }
-  it { should be_grouped_into 'root' }
-  it { should contain 'test.local = echo OK > /tmp/test.txt' }
-end
-
-describe command('RENEWED_DOMAINS=test.local /usr/local/bin/certbot-renew') do
-  its(:exit_status) { should eq 0 }
-end
-
-describe file('/tmp/test.txt') do
-  it { should exist }
-  it { should be_file }
-  it { should contain 'OK' }
-end
diff --git a/test/integration/inventory b/test/integration/inventory
deleted file mode 100644
index 52358bc..0000000
--- a/test/integration/inventory
+++ /dev/null
@@ -1,2 +0,0 @@
-[certbot]
-localhost