diff --git a/README.md b/README.md
index 294c896..b69cc9d 100644
--- a/README.md
+++ b/README.md
@@ -211,7 +211,7 @@ deploy_fields:
 | AdventureLog | yes | -- | SECRET_KEY, DB_PASSWORD |
 | Audiobookshelf | yes | yes | -- |
 | BentoPDF | yes | -- | -- |
-| BookStack | yes | -- | DB_PASSWORD |
+| BookStack | yes | -- | APP_KEY, DB_PASSWORD |
 | Cal.com | yes | -- | NEXTAUTH_SECRET, CALENDSO_ENCRYPTION_KEY, DB_PASSWORD |
 | Calibre-Web Automated | yes | yes | -- |
 | Claper | yes | -- | SECRET_KEY_BASE, DB_PASSWORD |
diff --git a/templates/bookstack/.felhom.yml b/templates/bookstack/.felhom.yml
index 509684e..fd490be 100644
--- a/templates/bookstack/.felhom.yml
+++ b/templates/bookstack/.felhom.yml
@@ -24,6 +24,12 @@ deploy_fields:
     description: "A szerver domain neve"
     locked_after_deploy: true
 
+  - env_var: APP_KEY
+    label: "Alkalmazás kulcs"
+    type: secret
+    generate: "password:32"
+    locked_after_deploy: true
+
   - env_var: DB_PASSWORD
     label: "Adatbázis jelszó"
     type: secret
diff --git a/templates/bookstack/docker-compose.yml b/templates/bookstack/docker-compose.yml
index 1cea7ff..f8e40a0 100644
--- a/templates/bookstack/docker-compose.yml
+++ b/templates/bookstack/docker-compose.yml
@@ -6,6 +6,7 @@
 # Environment variables:
 #   DOMAIN          - Your domain (e.g., demo-felhom.eu)
 #   DB_PASSWORD     - Adatbázis jelszó (auto-generated)
+#   APP_KEY         - Laravel application key (auto-generated)
 
 services:
   bookstack:
@@ -24,6 +25,7 @@ services:
       - DB_USER=bookstack
       - DB_PASS=${DB_PASSWORD}
       - DB_DATABASE=bookstack
+      - APP_KEY=${APP_KEY}
       - APP_URL=https://wiki.${DOMAIN}
     volumes:
       - bookstack_config:/config