diff --git a/__swarm/bookstack/stack.env b/__swarm/bookstack/stack.env
index 53838c4..c3e82ef 100755
--- a/__swarm/bookstack/stack.env
+++ b/__swarm/bookstack/stack.env
@@ -1,3 +1,4 @@
+APP_KEY=base64:HB4Gre472TO2pllXEw7afFY2dJ7E09ZJAaHLYP0/hV8=
 PUID=1000
 PGID=1000
 APP_URL=https://bookstack.sectorq.eu