diff --git a/manifest.toml b/manifest.toml
index 0252697..e1f5bcd 100644
--- a/manifest.toml
+++ b/manifest.toml
@@ -17,7 +17,7 @@ admindoc = "https://thelounge.chat/docs"
 code = "https://github.com/thelounge/thelounge"
 
 [integration]
-yunohost = ">= 11.1.15"
+yunohost = ">= 11.1.18"
 architectures = "all"
 multi_instance = false
 ldap = false
diff --git a/scripts/upgrade b/scripts/upgrade
index ec6bfb1..65648b6 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -66,7 +66,7 @@ then
 	pushd $install_dir
  		ynh_use_nodejs
 		ynh_exec_warn_less sudo -u $app env $ynh_node_load_PATH yarn install
-		ynh_exec_warn_less sudo -u $app env $ynh_node_load_PATH yarn build
+		ynh_exec_warn_less sudo -u $app env $ynh_node_load_PATH NODE_ENV=production yarn build
 	popd
 fi