diff --git a/scripts/upgrade b/scripts/upgrade
index 83f3600..ed3114b 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -84,10 +84,6 @@ then
 
 	# Download, check integrity, uncompress and patch the source from app.src
 	ynh_setup_source --dest_dir="$final_path"
-
-	# pushd $final_path
-	# 	bower update --allow-root
-	# popd
 fi
 
 #=================================================
@@ -139,11 +135,7 @@ ynh_store_file_checksum "$final_path/config/config.js"
 ynh_script_progression --message="Building CryptPad... (this will take some time and resources!)" --weight=60
 
 pushd "$final_path" || ynh_die
-	ynh_use_nodejs
-	ynh_exec_warn_less yarn install  --allow-root
-	yarn global add bower
-	bower cache clean
-	bower install --allow-root
+	bower update --allow-root
 popd || ynh_die
 
 #=================================================