diff --git a/__swarm/bookstack/.env b/__swarm/bookstack/.env
index 7422bc0..66a01b8 100755
--- a/__swarm/bookstack/.env
+++ b/__swarm/bookstack/.env
@@ -13,6 +13,7 @@ TZ: Europe/Bratislava
 MYSQL_DATABASE: bookstackapp
 MYSQL_USER: bookstack
 MYSQL_PASSWORD: l4c1j4yd33Du5lo
+APP_KEY: base64:HB4Gre472TO2pllXEw7afFY2dJ7E09ZJAaHLYP0/hV8=
 # # Set authentication method to be saml2
 # AUTH_METHOD: saml2
 # # Control if BookStack automatically initiates login via your SAML system if it's the only authentication method.