diff --git a/package-lock.json b/package-lock.json
index cbbf172..9de2ff5 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -601,6 +601,7 @@
           "version": "0.1.4",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "kind-of": "^3.0.2",
             "longest": "^1.0.1",
@@ -1783,7 +1784,8 @@
         "longest": {
           "version": "1.0.1",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "loose-envify": {
           "version": "1.3.1",