diff --git a/install.sh b/install.sh
index 8f31eb5..bfde5ce 100755
--- a/install.sh
+++ b/install.sh
@@ -126,6 +126,8 @@ retention:
   default_policy:
     min_lifetime: 1s
     max_lifetime: 1s
+  allowed_lifetime_min: 1s
+  allowed_lifetime_max: 1s
 EOF
 
 # Replace Password in homeserver.yaml