diff --git a/package-lock.json b/package-lock.json
index f1edc75..5457202 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1307,6 +1307,7 @@
                     "version": "0.1.4",
                     "bundled": true,
                     "dev": true,
+                    "optional": true,
                     "requires": {
                         "kind-of": "^3.0.2",
                         "longest": "^1.0.1",
@@ -1628,7 +1629,8 @@
                 "is-buffer": {
                     "version": "1.1.6",
                     "bundled": true,
-                    "dev": true
+                    "dev": true,
+                    "optional": true
                 },
                 "is-builtin-module": {
                     "version": "1.0.0",
@@ -1712,6 +1714,7 @@
                     "version": "3.2.2",
                     "bundled": true,
                     "dev": true,
+                    "optional": true,
                     "requires": {
                         "is-buffer": "^1.1.5"
                     }
@@ -1758,7 +1761,8 @@
                 "longest": {
                     "version": "1.0.1",
                     "bundled": true,
-                    "dev": true
+                    "dev": true,
+                    "optional": true
                 },
                 "lru-cache": {
                     "version": "4.1.3",
@@ -2024,7 +2028,8 @@
                 "repeat-string": {
                     "version": "1.6.1",
                     "bundled": true,
-                    "dev": true
+                    "dev": true,
+                    "optional": true
                 },
                 "require-directory": {
                     "version": "2.1.1",
@@ -2491,9 +2496,9 @@
             "integrity": "sha1-wNWmOycYgArY4esPpSachN1BhF4="
         },
         "qs": {
-            "version": "6.5.2",
-            "resolved": "https://registry.npmjs.org/qs/-/qs-6.5.2.tgz",
-            "integrity": "sha512-N5ZAX4/LxJmF+7wN74pUD6qAh9/wnvdQcjq9TZjevvXzSUo7bfmw91saqMjzGS2xq91/odN2dW/WOl7qQHNDGA=="
+            "version": "6.5.3",
+            "resolved": "https://registry.npmjs.org/qs/-/qs-6.5.3.tgz",
+            "integrity": "sha512-qxXIEh4pCGfHICj1mAJQ2/2XVZkjCDTcEgfoSQxc/fYivUZxTkk7L3bDBJSoNrEzXI17oUO5Dp07ktqE5KzczA=="
         },
         "rc": {
             "version": "1.2.8",
@@ -2819,7 +2824,7 @@
             "dependencies": {
                 "bluebird": {
                     "version": "3.4.7",
-                    "resolved": "http://registry.npmjs.org/bluebird/-/bluebird-3.4.7.tgz",
+                    "resolved": "https://registry.npmjs.org/bluebird/-/bluebird-3.4.7.tgz",
                     "integrity": "sha1-9y12C+Cbf3bQjtj66Ysomo0F+rM="
                 },
                 "isarray": {