diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7ddca00..5f44392 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,7 @@ Which is based on [Keep A Changelog](http://keepachangelog.com/)
 
 ### Added
 
+- support debian 11
 - support debian 10 and ansible 2.9
 
 ### Changed
@@ -14,6 +15,10 @@ Which is based on [Keep A Changelog](http://keepachangelog.com/)
 - test: replace kitchen to molecule
 - chore: use FQCN for module name
 
+### Removed
+
+- support debian 9
+
 ## [1.0.0] 2019-04-12
 
 - first version
diff --git a/README.md b/README.md
index b319cb9..c5550ed 100644
--- a/README.md
+++ b/README.md
@@ -7,8 +7,10 @@ Install and configure Keepalived
 
 ## Requirements
 
-* Ansible >= 2.7
-* Debian Stretch and Buster
+* Ansible >= 2.9
+* Debian
+  * Buster
+  * Bullseye
 
 ## Role variables
 
diff --git a/meta/main.yml b/meta/main.yml
index d9de935..54288f2 100644
--- a/meta/main.yml
+++ b/meta/main.yml
@@ -5,13 +5,13 @@ galaxy_info:
   company: Adrien Waksberg
   description: Install and configure keepalived
   license: Apache2
-  min_ansible_version: 2.7
+  min_ansible_version: 2.9
 
   platforms:
     - name: Debian
       versions:
-        - stretch
         - buster
+        - bullseye
 
   galaxy_tags:
     - ipfailover
diff --git a/molecule/default/converge.yml b/molecule/default/converge.yml
index ad561b8..cab65dd 100644
--- a/molecule/default/converge.yml
+++ b/molecule/default/converge.yml
@@ -25,3 +25,8 @@
           - hello
         notify:
           master: /bin/true
+
+  pre_tasks:
+    - name: update apt cache
+      ansible.builtin.apt:
+        update_cache: true
diff --git a/molecule/default/molecule.yml b/molecule/default/molecule.yml
index cd99616..0507c53 100644
--- a/molecule/default/molecule.yml
+++ b/molecule/default/molecule.yml
@@ -10,9 +10,17 @@ platforms:
     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
+  ansible-lint .
 verifier:
   name: testinfra