diff --git a/scripts/upgrade b/scripts/upgrade
index b582c60..a88ec38 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -223,6 +223,8 @@ ynh_script_progression --message="Upgrading Etherpad npm modules..." --weight=60
 chown -R $app: $final_path
 (cd "$final_path/src"
 ynh_exec_warn_less npm cache clean --force
+# Remove package-lock.json to prevent any shit during npm update...
+ynh_secure_remove --file="$final_path/src/package-lock.json"
 ynh_exec_warn_less ynh_exec_as $app PATH="$nodejs_path:$PATH" "$nodejs_path/npm" update)
 
 # Then update the additionnal modules