diff --git a/scripts/upgrade b/scripts/upgrade
index cebccbc..4e6c201 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -139,7 +139,8 @@ pushd "$final_path"
     ynh_use_nodejs
     	ynh_exec_warn_less ynh_exec_as $app env $ynh_node_load_PATH yarn run clean-all
 	ynh_exec_warn_less ynh_exec_as $app env $ynh_node_load_PATH corepack enable
-	ynh_exec_warn_less ynh_exec_as $app env $ynh_node_load_PATH yarn set version berry
+        ynh_exec_warn_less ynh_exec_as $app env $ynh_node_load_PATH corepack prepare yarn@stable --activate
+	ynh_exec_warn_less ynh_exec_as $app env $ynh_node_load_PATH yarn set version berry	
 	ynh_exec_warn_less ynh_exec_as $app env $ynh_node_load_PATH yarn install
 	ynh_exec_warn_less ynh_exec_as $app env $ynh_node_load_PATH NODE_ENV=production yarn build
 	ynh_exec_warn_less ynh_exec_as $app env $ynh_node_load_PATH yarn migrate