diff --git a/ansible/inventory/group_vars/all.yaml b/ansible/inventory/group_vars/all.yaml
index 5f751f6..58c9412 100644
--- a/ansible/inventory/group_vars/all.yaml
+++ b/ansible/inventory/group_vars/all.yaml
@@ -151,6 +151,14 @@ services:
       http: "3001"
       redis: "6383"
     subuid: "100999"
+  outline:
+    domain:
+      public: "outline"
+      internal: "outline.app"
+    ports:
+      http: "3002"
+      redis: "6384"
+    subuid: "101000"
 
 version:
   packages:
@@ -187,3 +195,4 @@ version:
     nextcloud: "33.0.3"
     collabora: "25.04.9.4.1"
     sure: "0.7.0-hotfix.2"
+    outline: "1.7.1"
diff --git a/ansible/playbooks/app/site.yaml b/ansible/playbooks/app/site.yaml
index b0c3163..b8a9bd4 100644
--- a/ansible/playbooks/app/site.yaml
+++ b/ansible/playbooks/app/site.yaml
@@ -225,6 +225,14 @@
           tags: ["site", "sure"]
       tags: ["site", "sure"]
 
+    - name: Set outline
+      ansible.builtin.include_role:
+        name: "app"
+        tasks_from: "services/set_outline"
+        apply:
+          tags: ["site", "outline"]
+      tags: ["site", "outline"]
+
     - name: Flush handlers right now
       ansible.builtin.meta: "flush_handlers"
 
diff --git a/ansible/roles/app/handlers/main.yaml b/ansible/roles/app/handlers/main.yaml
index 877dfc7..26e2ed0 100644
--- a/ansible/roles/app/handlers/main.yaml
+++ b/ansible/roles/app/handlers/main.yaml
@@ -102,3 +102,15 @@
   changed_when: false
   listen: "notification_restart_sure"
   ignore_errors: true # noqa: ignore-errors
+
+- name: Restart outline
+  ansible.builtin.systemd:
+    name: "outline.service"
+    state: "restarted"
+    enabled: true
+    scope: "user"
+    daemon_reload: true
+  when: is_outline_init.stat.exists
+  changed_when: false
+  listen: "notification_restart_outline"
+  ignore_errors: true # noqa: ignore-errors
diff --git a/ansible/roles/app/tasks/services/set_outline.yaml b/ansible/roles/app/tasks/services/set_outline.yaml
new file mode 100644
index 0000000..dbb1c75
--- /dev/null
+++ b/ansible/roles/app/tasks/services/set_outline.yaml
@@ -0,0 +1,152 @@
+---
+- name: Set redis service name
+  ansible.builtin.set_fact:
+    redis_service: "outline"
+
+- name: Create redis_outline directory
+  ansible.builtin.file:
+    path: "{{ node['home_path'] }}/{{ item }}"
+    state: "directory"
+    owner: "{{ services['redis']['subuid'] }}"
+    group: "svadmins"
+    mode: "0770"
+  loop:
+    - "containers/redis"
+    - "containers/redis/{{ redis_service }}"
+    - "containers/redis/{{ redis_service }}/data"
+  become: true
+
+- name: Deploy redis config file
+  ansible.builtin.template:
+    src: "{{ hostvars['console']['node']['config_path'] }}/services/containers/app/redis/redis.conf.j2"
+    dest: "{{ node['home_path'] }}/containers/redis/{{ redis_service }}/redis.conf"
+    owner: "{{ ansible_user }}"
+    group: "svadmins"
+    mode: "0644"
+  register: "is_redis_conf"
+
+- name: Deploy redis container file
+  ansible.builtin.template:
+    src: "{{ hostvars['console']['node']['config_path'] }}/services/containers/app/redis/redis.container.j2"
+    dest: "{{ node['home_path'] }}/.config/containers/systemd/redis_{{ redis_service }}.container"
+    owner: "{{ ansible_user }}"
+    group: "svadmins"
+    mode: "0644"
+  register: "is_redis_containerfile"
+
+- name: Enable (Restart) redis service
+  ansible.builtin.systemd:
+    name: "redis_{{ redis_service }}.service"
+    state: "restarted"
+    enabled: true
+    daemon_reload: true
+    scope: "user"
+  when: is_redis_conf.changed or is_redis_containerfile.changed # noqa: no-handler
+
+- name: Create outline directory
+  ansible.builtin.file:
+    path: "{{ node['home_path'] }}/{{ item }}"
+    state: "directory"
+    owner: "{{ services['outline']['subuid'] }}"
+    group: "svadmins"
+    mode: "0770"
+  loop:
+    - "data/containers/outline"
+    - "data/containers/outline/data"
+    - "containers/outline"
+    - "containers/outline/ssl"
+  become: true
+
+- name: Check data directory empty
+  ansible.builtin.stat:
+    path: "{{ node['home_path'] }}/data/containers/outline/.init"
+  register: "is_outline_init"
+
+- name: Create .init file
+  ansible.builtin.file:
+    path: "{{ node['home_path'] }}/data/containers/outline/.init"
+    state: "touch"
+    mode: "0644"
+    owner: "{{ ansible_user }}"
+    group: "svadmins"
+  when: not is_outline_init.stat.exists
+
+- name: Deploy root certificate
+  ansible.builtin.copy:
+    content: |
+      {{ hostvars['console']['ca']['root']['crt'] }}
+    dest: "{{ node['home_path'] }}/containers/outline/ssl/{{ root_cert_filename }}"
+    owner: "{{ services['outline']['subuid'] }}"
+    group: "svadmins"
+    mode: "0440"
+  become: true
+  notify: "notification_restart_outline"
+  no_log: true
+
+- name: Register secret value to podman secret
+  containers.podman.podman_secret:
+    name: "{{ item.name }}"
+    data: "{{ item.value }}"
+    state: "present"
+    force: true
+  loop:
+    - name: "OUTLINE_SECRET_KEY"
+      value: "{{ hostvars['console']['outline']['session_secret'] }}"
+    - name: "OUTLINE_UTILS_SECRET"
+      value: "{{ hostvars['console']['outline']['utils_secret'] }}"
+    - name: "OUTLINE_DATABASE_PASSWORD"
+      value: "{{ hostvars['console']['postgresql']['password']['outline'] }}"
+    - name: "OUTLINE_OIDC_CLIENT_SECRET"
+      value: "{{ hostvars['console']['outline']['oidc']['secret'] }}"
+  notify: "notification_restart_outline"
+  no_log: true
+
+- name: Deploy outline.container file
+  ansible.builtin.template:
+    src: "{{ hostvars['console']['node']['config_path'] }}/services/containers/app/outline/outline.container.j2"
+    dest: "{{ node['home_path'] }}/.config/containers/systemd/outline.container"
+    owner: "{{ ansible_user }}"
+    group: "svadmins"
+    mode: "0644"
+  notify: "notification_restart_outline"
+
+- name: Enable outline.service
+  ansible.builtin.systemd:
+    name: "outline.service"
+    state: "started"
+    enabled: true
+    daemon_reload: true
+    scope: "user"
+
+- name: Check container archive images
+  ansible.builtin.stat:
+    path: "{{ node['home_path'] }}/archives/containers/{{ item.file }}.tar"
+  loop:
+    - image: "docker.io/library/redis:{{ version['containers']['redis'] }}"
+      file: "docker.io_library_redis_{{ version['containers']['redis'] }}"
+    - image: "docker.io/outlinewiki/outline:{{ version['containers']['outline'] }}"
+      file: "docker.io_outlinewiki_outline_{{ version['containers']['outline'] }}"
+  loop_control:
+    label: "{{ item.file }}"
+  register: container_archive_images
+
+- name: Save container archive images
+  containers.podman.podman_save:
+    image:
+      - "{{ item.item.image }}"
+    dest: "{{ node['home_path'] }}/archives/containers/{{ item.item.file }}.tar"
+    format: "oci-archive"
+    force: false
+  loop: "{{ container_archive_images.results }}"
+  loop_control:
+    label: "{{ item.item.file }}"
+  when: not item.stat.exists
+
+- name: Fetch container archive images
+  ansible.builtin.fetch:
+    src: "{{ node['home_path'] }}/archives/containers/{{ item.item.file }}.tar"
+    dest: "{{ hostvars['console']['node']['data_path'] }}/images/containers/"
+    flat: true
+  loop: "{{ container_archive_images.results }}"
+  loop_control:
+    label: "{{ item.item.file }}"
diff --git a/ansible/roles/infra/tasks/services/set_postgresql.yaml b/ansible/roles/infra/tasks/services/set_postgresql.yaml
index dc1e733..3f75d6a 100644
--- a/ansible/roles/infra/tasks/services/set_postgresql.yaml
+++ b/ansible/roles/infra/tasks/services/set_postgresql.yaml
@@ -12,6 +12,7 @@
       - "affine"
       - "nextcloud"
       - "sure"
+      - "outline"
 
 - name: Create postgresql directory
   ansible.builtin.file:
diff --git a/config/secrets/secrets.yaml b/config/secrets/secrets.yaml
index 3cc12a5..34c8938 100644
--- a/config/secrets/secrets.yaml
+++ b/config/secrets/secrets.yaml
@@ -120,6 +120,7 @@ postgresql:
         affine: ENC[AES256_GCM,data:XPXrcszsV06YqCJZ7CDqc4rCwqqNlbtLCFYfLAQ8jamLtft8L2UVrMA4WZo=,iv:vrWdBeckxB9tmEE628j4jhU+hSpE6TXYMGt0hh1Cg84=,tag:hlWwWUGht8NqWTZREMsa1Q==,type:str]
         nextcloud: ENC[AES256_GCM,data:ROsximNuWYMTZktmLJPx7W1Qol/uT+APgwoCtFO/6ZYYc3KxKvlk344eqEc=,iv:4d+MrfIHjJKAcwhvZ3g4go66uZcieuL7lngKErJd+fg=,tag:QbWOtxeCbiu62GyrE2atXg==,type:str]
         sure: ENC[AES256_GCM,data:FULJ2gjJ2gZC3s324itW+CjGRBHIP9RnOqw5TT1UaiUhb7UHAPm1na+LsZk=,iv:c0GnVZkxprJUzPPq3TCQaZvAes9QQuvDXqgVLLaiQIg=,tag:uDxy/Lkd2hNK4AWwMNMslw==,type:str]
+        outline: ENC[AES256_GCM,data:0eJFCfHgS4olWXHOnUPixs4Dl5PoxJa+2H1mk3YgC4GUv+nX8gTPmzKTMVM=,iv:HGxX7aLODUc2nVLC8YXdet9qphU/wxMapWhk93YmHDM=,tag:6/2uckW/a24LgVFRH6E85Q==,type:str]
 #ENC[AES256_GCM,data:ODXFUxxxdQ==,iv:s9zJVx6wo6x517tbNvC+FZ0dFzqbjqeLI6rXBq72hQA=,tag:bXoV2I3LbpmQyddJrtS3Qg==,type:comment]
 #
 #
@@ -251,6 +252,16 @@ sure:
 #ENC[AES256_GCM,data:ODXFUxxxdQ==,iv:s9zJVx6wo6x517tbNvC+FZ0dFzqbjqeLI6rXBq72hQA=,tag:bXoV2I3LbpmQyddJrtS3Qg==,type:comment]
 #
 #
+#ENC[AES256_GCM,data:H6BtfLuevnDCEpHSmf6pxQ==,iv:9Jw0UZwVwS2It7c4e1rAN/BEiqDKp9DHD4W9xdpJ/Vs=,tag:Xj8HKvxgCA260CXBVK2S1A==,type:comment]
+outline:
+    session_secret: ENC[AES256_GCM,data:A26j8/ghGA9MjDiuq+H84iTFXkHZp3l3LbGKO9w+Cgv+u1dkTF5q4zuBnOSBi+Tnz+2Y4jIoxsac+CS0dguRMg==,iv:NzJiJxVxOvud3e4mP8urnHrqugE8SmjFVnZtwfzrUzs=,tag:YR/jexb3G0HfC2qHpn6fPA==,type:str]
+    utils_secret: ENC[AES256_GCM,data:ACI+NZzqHBsYeb4WwTJ1nfJcy6zNwJn2hBqA93aM5cgNWQ4KtQHDXgmS6UTwmSpxrteiaH25J3Np03H3eQoVeA==,iv:nitwxxwTPQvoQXGLVMnk2zsdC7M+JIXkTY4zJdQ3DFo=,tag:IQewG7EE9IgQk+Rfz7M5Iw==,type:str]
+    oidc:
+        secret: ENC[AES256_GCM,data:zR6sN205C51BIiQxLYOwC4ZbTYGr2AveiPeEbdadairmfnNJkGOtm0zT4Gg=,iv:uyYoJYuAuH/Gy2dlLr2SkkLYq+lMdwBgmzUsEj1EAKc=,tag:uhgvE6BagvPPKf7Y3NaGfA==,type:str]
+        hash: ENC[AES256_GCM,data:xOibOUdmfhvUk6HABHf/MGIaUqRtrmbBpD5eTIrlt+Ll5IxuIaECMIyBufqV6KStoNsAxtlWmPqoVYROnVh7Z50ntywP6w6YNFbihMGr5tYnNBAS2ITViCq0Z7GQpNVmhNkFbmZv4bX14YOI557CS1KeDVrKrHnZ3fPgEgDwEiUdCwo=,iv:3lVQEw/gmTvJ6wteyKhAHAYUUw1AfKku8YEveddJTZU=,tag:0jimA4vof+nKOQtCOrVFdw==,type:str]
+#ENC[AES256_GCM,data:ODXFUxxxdQ==,iv:s9zJVx6wo6x517tbNvC+FZ0dFzqbjqeLI6rXBq72hQA=,tag:bXoV2I3LbpmQyddJrtS3Qg==,type:comment]
+#
+#
 #ENC[AES256_GCM,data:T4Wtn49AAxPd2QUFTR+q,iv:bH5goGWBDqumAat9dUv2OwfCUJUpuVqncTMqMBZUXhI=,tag:G+W6hHA+yftQ+4RJpXrxHg==,type:comment]
 switch:
     password: ENC[AES256_GCM,data:qu0f9L7A0eFq/UCpaRs=,iv:W8LLOp3MSfd/+EfNEZNf91K8GgI5eUfVPoWTRES2C0Y=,tag:Q5FlAOfwqwJwPvd7k6i+0g==,type:str]
@@ -280,7 +291,7 @@ sops:
             UmliaFNxVTBqRkI1QWJpWGpTRWxETW8KEY/8AfU73UOzCGhny1cNnd5dCNv7bHXt
             k+uyWPPi+enFkVaceSwMFrA66uaWWrwAj11sXEB7yzvGFPrnAGezjQ==
             -----END AGE ENCRYPTED FILE-----
-    lastmodified: "2026-05-09T14:26:51Z"
-    mac: ENC[AES256_GCM,data:TYs08ZSS2kcO5lYuhQ/IySUSQ3DpL+ba3/uNLyszht4OttR110/W/WQLiRuu/Ql6FwtDtjq6I3iNpOhmCHSv1kMCam1l99GEIYCaPUIY+TY3Zw0j7518dFXe8p/DrKRwIVXfK5lIKLIEd+eizD50HzwXXJFmU+7YDkQ1Dx+55kw=,iv:arJKJ4wO4sdQlu3GZbtultsfM6s8vbhG93tnf2EjJDc=,tag:m95gUqvn4w85XI8qVvCZpQ==,type:str]
+    lastmodified: "2026-05-16T08:55:23Z"
+    mac: ENC[AES256_GCM,data:UXueLe3zZcuvUUH9OJGWcwUqzPoIhw+vtTpqZIB2fGOa4KpFCUmOXtRgws+mQVzBRB30xpbfbbwWM/ZIWjVx2EoE4uP09uk8fgtmMD9ZBacHxEzjxksKW78cX4SoOj6tzzhACTkj61RRrXS8Ft1RNZJFZlzeQVodEGt5eoJUq28=,iv:eCsQAiTqqL1w6xQ69u/Yi4iKUXS44sPUOSDuYPp8WFM=,tag:2kEdh4VB0XWhv0KBgD8EGA==,type:str]
     unencrypted_suffix: _unencrypted
     version: 3.12.1
diff --git a/config/services/containers/app/outline/outline.container.j2 b/config/services/containers/app/outline/outline.container.j2
new file mode 100644
index 0000000..a384843
--- /dev/null
+++ b/config/services/containers/app/outline/outline.container.j2
@@ -0,0 +1,77 @@
+[Quadlet]
+DefaultDependencies=false
+
+[Unit]
+Description=Outline
+
+After=redis_outline.service
+Wants=redis_outline.service
+
+[Container]
+Image=docker.io/outlinewiki/outline:{{ version['containers']['outline'] }}
+ContainerName=outline
+HostName=outline
+PublishPort={{ services['outline']['ports']['http'] }}:3000/tcp
+
+# Volumes
+Volume=%h/data/containers/outline/data:/var/lib/outline/data:rw
+Volume=%h/containers/outline/ssl:/etc/ssl/outline:ro
+
+# General
+Environment="TZ={{ timezone }}"
+Environment="NODE_ENV=production"
+Environment="URL=https://{{ services['outline']['domain']['public'] }}.{{ domain['public'] }}"
+Environment="PORT=3000"
+#Environment="FORCE_HTTPS=true" #HTST function is not required
+
+# Secrets
+Secret=OUTLINE_SECRET_KEY,type=env,target=SECRET_KEY
+Secret=OUTLINE_UTILS_SECRET,type=env,target=UTILS_SECRET
+
+# Database
+Environment="DATABASE_HOST={{ services['postgresql']['domain'] }}.{{ domain['internal'] }}"
+Environment="DATABASE_PORT={{ services['postgresql']['ports']['tcp'] }}"
+Environment="DATABASE_NAME=outline_db"
+Environment="DATABASE_USER=outline"
+Environment="PGSSLMODE=verify-full"
+Environment="NODE_EXTRA_CA_CERTS=/etc/ssl/outline/{{ root_cert_filename }}"
+Secret=OUTLINE_DATABASE_PASSWORD,type=env,target=DATABASE_PASSWORD
+
+# Redis
+Environment="REDIS_URL=redis://host.containers.internal:{{ services['outline']['ports']['redis'] }}"
+
+# Storage
+Environment="FILE_STORAGE=local"
+Environment="FILE_STORAGE_LOCAL_ROOT_DIR=/var/lib/outline/data"
+Environment="FILE_STORAGE_UPLOAD_MAX_SIZE=262144000"
+
+# OIDC
+Environment="OIDC_CLIENT_ID=outline"
+Environment="OIDC_AUTH_URI=https://{{ services['authelia']['domain'] }}.{{ domain['public'] }}/api/oidc/authorization"
+Environment="OIDC_TOKEN_URI=https://{{ services['authelia']['domain'] }}.{{ domain['public'] }}/api/oidc/token"
+Environment="OIDC_USERINFO_URI=https://{{ services['authelia']['domain'] }}.{{ domain['public'] }}/api/oidc/userinfo"
+Environment="OIDC_USERNAME_CLAIM=preferred_username"
+Environment="OIDC_DISPLAY_NAME=Authelia"
+Environment="OIDC_SCOPES=openid offline_access profile email"
+Secret=OUTLINE_OIDC_CLIENT_SECRET,type=env,target=OIDC_CLIENT_SECRET
+
+# Mail
+#Environment="SMTP_HOST=smtp.example.com"
+#Environment="SMTP_PORT=587"
+#Environment="SMTP_USERNAME=outline@example.com"
+#Environment="SMTP_PASSWORD=change_me"
+#Environment="SMTP_FROM_EMAIL=outline@example.com"
+#Environment="SMTP_REPLY_EMAIL=outline@example.com"
+#Environment="SMTP_SECURE=false"
+
+# Optional
+Environment="LOG_LEVEL=warn"
+
+[Service]
+ExecStartPre=/usr/bin/nc -zv {{ services['postgresql']['domain'] }}.{{ domain['internal'] }} {{ services['postgresql']['ports']['tcp'] }}
+Restart=always
+RestartSec=10s
+TimeoutStopSec=120
+
+[Install]
+WantedBy=default.target
diff --git a/config/services/containers/auth/authelia/config/authelia.yaml.j2 b/config/services/containers/auth/authelia/config/authelia.yaml.j2
index 2e4078b..84e6d91 100644
--- a/config/services/containers/auth/authelia/config/authelia.yaml.j2
+++ b/config/services/containers/auth/authelia/config/authelia.yaml.j2
@@ -260,3 +260,26 @@ identity_providers:
         access_token_signed_response_alg: 'none'
         userinfo_signed_response_alg: 'none'
         token_endpoint_auth_method: 'client_secret_basic'
+      # https://www.authelia.com/integration/openid-connect/clients/outline/
+      - client_id: 'outline'
+        client_name: 'Outline'
+        client_secret: '{{ hostvars['console']['outline']['oidc']['hash'] }}'
+        public: false
+        authorization_policy: 'one_factor'
+        require_pkce: false
+        pkce_challenge_method: ''
+        redirect_uris:
+          - 'https://{{ services['outline']['domain']['public'] }}.{{ domain['public'] }}/auth/oidc.callback'
+        scopes:
+          - 'openid'
+          - 'offline_access'
+          - 'profile'
+          - 'email'
+        response_types:
+          - 'code'
+        grant_types:
+          - 'authorization_code'
+          - 'refresh_token'
+        access_token_signed_response_alg: 'none'
+        userinfo_signed_response_alg: 'none'
+        token_endpoint_auth_method: 'client_secret_post'
diff --git a/config/services/containers/common/caddy/etc/app/Caddyfile.j2 b/config/services/containers/common/caddy/etc/app/Caddyfile.j2
index 9e57c65..fa4cb24 100644
--- a/config/services/containers/common/caddy/etc/app/Caddyfile.j2
+++ b/config/services/containers/common/caddy/etc/app/Caddyfile.j2
@@ -77,3 +77,9 @@
                 header_up Host {http.request.header.X-Forwarded-Host}
         }
 }
+{{ services['outline']['domain']['internal'] }}.{{ domain['internal'] }} {
+        import private_tls
+        reverse_proxy host.containers.internal:{{ services['outline']['ports']['http'] }} {
+                header_up Host {http.request.header.X-Forwarded-Host}
+        }
+}
diff --git a/config/services/containers/common/caddy/etc/auth/Caddyfile.j2 b/config/services/containers/common/caddy/etc/auth/Caddyfile.j2
index 666aa1b..ef82979 100644
--- a/config/services/containers/common/caddy/etc/auth/Caddyfile.j2
+++ b/config/services/containers/common/caddy/etc/auth/Caddyfile.j2
@@ -136,6 +136,15 @@
                 }
         }
 }
+{{ services['outline']['domain']['public'] }}.{{ domain['public'] }} {
+        import crowdsec_log
+        route {
+                crowdsec
+                reverse_proxy https://{{services['outline']['domain']['internal'] }}.{{ domain['internal'] }} {
+                        header_up Host {http.reverse_proxy.upstream.host}
+                }
+        }
+}
 
 # Internal domain
 {{ node['name'] }}.{{ domain['internal'] }} {
diff --git a/docs/services/app/outline.md b/docs/services/app/outline.md
new file mode 100644
index 0000000..57432a0
--- /dev/null
+++ b/docs/services/app/outline.md
@@ -0,0 +1,52 @@
+# Outline
+
+## Prerequisite
+
+### Create database
+
+- Create the password with `openssl rand -base64 32`
+  - Save this value in secrets.yaml in `postgresql.password.outline`
+  - Access infra server to create outline_db with `podman exec -it postgresql psql -U postgres`
+
+```SQL
+CREATE USER outline WITH PASSWORD 'postgresql.password.outline';
+CREATE DATABASE outline_db;
+ALTER DATABASE outline_db OWNER TO outline;
+```
+
+### Create oidc secret and hash
+
+- Create the secret with `openssl rand -base64 32`
+- access to auth vm
+  - `podman exec -it authelia sh`
+  - `authelia crypto hash generate pbkdf2 --password 'outline.oidc.secret'`
+- Save this value in secrets.yaml in `outline.oidc.secret` and `outline.oidc.hash`
+
+### Create session secret and utils value
+
+- Create two secrets with `openssl rand -hex 32`
+  - Save this value in secrets.yaml in `outline.session_secret`
+  - Save this value in secrets.yaml in `outline.utils_secret`
+
+### Add postgresql dump backup list
+
+- [set_postgresql.yaml](../../../ansible/roles/infra/tasks/services/set_postgresql.yaml)
+
+```yaml
+- name: Set connected services list
+  ansible.builtin.set_fact:
+    connected_services:
+      - ...
+      - "outline"
+```
+
+## Configuration
+
+### Notice
+
+- Outline is a BSL, not fully open-sourced stack. Always ensure they can change their policy of the outline
+
+### Access to outline
+
+- https://outline.ilnmors.com
+  - Authelia redirect and automatically sign-up
diff --git a/docs/specifications/environments.md b/docs/specifications/environments.md
index 0757640..75f6395 100644
--- a/docs/specifications/environments.md
+++ b/docs/specifications/environments.md
@@ -126,6 +126,8 @@
             - Link to Nextcloud
         - [x] sure
             - budget and finance
+        - [x] outline
+            - Compare to affine, the whiteboard and canvas functions are not useful enough
         - [ ] memos
         - WriteFreely or directus + frontend(Astro)
         - MediaCMS or PeerTube