diff --git a/scripts/upgrade b/scripts/upgrade
index c7557c5..cf93efb 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -64,6 +64,7 @@ ynh_script_progression --message="Building EtherCalc... (this will take some tim
 
 pushd "$install_dir"
 	ynh_use_nodejs
+	ynh_secure_remove --file="$install_dir/package-lock.json"
 	ynh_exec_warn_less npm install -g ethercalc
 	ynh_exec_warn_less npm i zappajs
 popd