diff --git a/CHANGELOG.md b/CHANGELOG.md
index f77509f..7b35a15 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -20,6 +20,10 @@ Which is based on [Keep A Changelog](http://keepachangelog.com/)
 - bug in user template
 - add multiple value type in service vars
 
+### Removed
+
+- test: remove support debian11
+
 ## v1.0.0 - 2021-08-15
 
 - first version
diff --git a/README.md b/README.md
index 0bab0ec..534d6f3 100644
--- a/README.md
+++ b/README.md
@@ -9,7 +9,6 @@ Install and configure Icinga2
 
 - Ansible >= 2.9
 - Debian
-  - Bullseye
   - Bookworm
 
 ## Role variables
diff --git a/meta/main.yml b/meta/main.yml
index c0e3243..caf46f9 100644
--- a/meta/main.yml
+++ b/meta/main.yml
@@ -6,12 +6,11 @@ galaxy_info:
   company: Adrien Waksberg
   description: Install and configure Icinga2
   license: Apache2
-  min_ansible_version: 2.9
+  min_ansible_version: "2.9"
 
   platforms:
     - name: Debian
       versions:
-        - bullseye
         - bookworm
 
   galaxy_tags:
diff --git a/molecule/default/molecule.yml b/molecule/default/molecule.yml
index 68f5223..e73cc9e 100644
--- a/molecule/default/molecule.yml
+++ b/molecule/default/molecule.yml
@@ -11,15 +11,6 @@ platforms:
     command: /bin/systemd
     capabilities:
       - SYS_ADMIN
-  - name: debian11
-    image: code.waks.be/nishiki/molecule:debian11
-    privileged: true
-    volumes:
-      - /sys/fs/cgroup:/sys/fs/cgroup:rw
-    cgroupns_mode: host
-    command: /bin/systemd
-    capabilities:
-      - SYS_ADMIN
 lint: |
   set -e
   yamllint .
diff --git a/tasks/base.yml b/tasks/base.yml
index 70ba84d..0d2b565 100644
--- a/tasks/base.yml
+++ b/tasks/base.yml
@@ -9,20 +9,22 @@
   until: result is succeeded
   tags: icinga2
 
-- name: add key repository
-  ansible.builtin.apt_key:
+- name: Add repository key
+  ansible.builtin.get_url:
     url: https://packages.icinga.com/icinga.key
-  retries: 2
-  register: result
-  until: result is succeeded
+    dest: /etc/apt/keyrings/icinga.asc
+    owner: root
+    group: root
+    mode: 0644
+    checksum: sha256:be677e07972ed57b99ffc2fd211379ac11b9c6a7c8d9460086b447b96b0a82bb
   tags: icinga2
 
-- name: add repository
+- name: Add repository
   ansible.builtin.apt_repository:
-    repo: 'deb https://packages.icinga.com/debian icinga-{{ ansible_distribution_release }} main'
-  retries: 2
-  register: result
-  until: result is succeeded
+    repo: >-
+      deb [signed-by=/etc/apt/keyrings/icinga.asc]
+      https://packages.icinga.com/debian icinga-{{ ansible_distribution_release }} main
+    filename: icinga
   tags: icinga2
 
 - name: install packages