diff --git a/scripts/upgrade b/scripts/upgrade
index 87b5b9b..886f5cc 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -340,10 +340,8 @@ then
 		ynh_exec_as $app $ynh_ruby_load_path $ld_preload bin/bundle config without 'development test'
 		ynh_exec_as $app $ynh_ruby_load_path $ld_preload bin/bundle install -j$(getconf _NPROCESSORS_ONLN)
 		ynh_use_nodejs
-		ynh_exec_warn_less ynh_exec_as $app $ynh_node_load_PATH $ynh_npm i corepack
 		ynh_exec_warn_less ynh_exec_as $app $ynh_node_load_PATH corepack enable
-	    	ynh_exec_warn_less ynh_exec_as $app $ynh_node_load_PATH corepack prepare yarn@stable --activate
-		ynh_exec_as $app $ynh_node_load_PATH yarn install --pure-lockfile
+		ynh_exec_as $app $ynh_node_load_PATH yarn install
 		ynh_exec_warn_less ynh_exec_as $app RAILS_ENV=production $ynh_ruby_load_path $ld_preload bin/bundle exec rails assets:clean
 		ynh_exec_warn_less ynh_exec_as $app RAILS_ENV=production $ynh_ruby_load_path $ld_preload bin/bundle exec rails assets:precompile
 		ynh_exec_warn_less ynh_exec_as $app RAILS_ENV=production $ynh_ruby_load_path $ld_preload bin/bundle exec rails db:migrate