diff --git a/scripts/upgrade b/scripts/upgrade
index 2529719..eb8cca9 100755
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -45,6 +45,9 @@ pushd $install_dir
 
 	ynh_script_progression --message="Building Yarn dev dependencies... This can be very long, be patient !" --weight=25
 	ynh_exec_warn_less ynh_exec_as $app env $ynh_node_load_PATH yarn run build
+	
+	ynh_script_progression --message="Cleaning cache... " --weight=3
+	ynh_exec_warn_less sudo -u $app env $ynh_node_load_PATH yarn cache clean 2>&1
 
 popd