diff --git a/.env.sample b/.env.sample
index d7c410b..043e3d8 100644
--- a/.env.sample
+++ b/.env.sample
@@ -5,7 +5,7 @@ DOMAIN=garage.example.com
 LETS_ENCRYPT_ENV=production
 COMPOSE_FILE="compose.yml"
 
-SECRET_RPC_SECRET_VERSION=v1 # length=32 charset=hex
+SECRET_RPC_SECRET_VERSION=v1 # length=64 charset=hex
 
 # Changing the replication factor after initial deployment is not 
 # supported and requires deleting the existing cluster layout metadata.
diff --git a/compose.yml b/compose.yml
index e6870a5..51bef58 100644
--- a/compose.yml
+++ b/compose.yml
@@ -3,7 +3,8 @@ version: "3.8"
 
 services:
   app:
-    image: dxflrs/garage:v2.1.0
+    image: dxflrs/garage:v2.3.0
+    hostname: "${DOMAIN}"
     configs:
       - source: garage_conf
         target: /etc/garage.toml