diff --git a/package-lock.json b/package-lock.json
index 13e32ed..92a3bdb 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -442,6 +442,7 @@
       "version": "1.2.0",
       "resolved": "https://registry.npmjs.org/adler-32/-/adler-32-1.2.0.tgz",
       "integrity": "sha1-aj5r8KY5ALoVZSgIyxXGgT0aXyU=",
+      "optional": true,
       "requires": {
         "exit-on-epipe": "~1.0.1",
         "printj": "~1.1.0"
@@ -1357,7 +1358,8 @@
     "commander": {
       "version": "3.0.0",
       "resolved": "https://registry.npmjs.org/commander/-/commander-3.0.0.tgz",
-      "integrity": "sha512-pl3QrGOBa9RZaslQiqnnKX2J068wcQw7j9AIaBQ9/JEp5RY6je4jKTImg0Bd+rpoONSe7GUFSgkxLeo17m3Pow=="
+      "integrity": "sha512-pl3QrGOBa9RZaslQiqnnKX2J068wcQw7j9AIaBQ9/JEp5RY6je4jKTImg0Bd+rpoONSe7GUFSgkxLeo17m3Pow==",
+      "optional": true
     },
     "concat-map": {
       "version": "0.0.1",
@@ -1432,6 +1434,7 @@
       "version": "1.2.0",
       "resolved": "https://registry.npmjs.org/crc-32/-/crc-32-1.2.0.tgz",
       "integrity": "sha512-1uBwHxF+Y/4yF5G48fwnKq6QsIXheor3ZLPT80yGBV1oEUwpPojlEhQbWKVw1VwcTQyMGHK1/XMmTjmlsmTTGA==",
+      "optional": true,
       "requires": {
         "exit-on-epipe": "~1.0.1",
         "printj": "~1.1.0"
@@ -1611,7 +1614,8 @@
     "exit-on-epipe": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/exit-on-epipe/-/exit-on-epipe-1.0.1.tgz",
-      "integrity": "sha512-h2z5mrROTxce56S+pnvAV890uu7ls7f1kEvVGJbw1OlFH3/mlJ5bkXu0KRyW94v37zzHPiUd55iLn3DA7TjWpw=="
+      "integrity": "sha512-h2z5mrROTxce56S+pnvAV890uu7ls7f1kEvVGJbw1OlFH3/mlJ5bkXu0KRyW94v37zzHPiUd55iLn3DA7TjWpw==",
+      "optional": true
     },
     "express": {
       "version": "4.17.1",
@@ -2374,7 +2378,8 @@
     "printj": {
       "version": "1.1.2",
       "resolved": "http://registry.npmjs.org/printj/-/printj-1.1.2.tgz",
-      "integrity": "sha512-zA2SmoLaxZyArQTOPj5LXecR+RagfPSU5Kw1qP+jkWeNlrq+eJZyY2oS68SU1Z/7/myXM4lo9716laOFAVStCQ=="
+      "integrity": "sha512-zA2SmoLaxZyArQTOPj5LXecR+RagfPSU5Kw1qP+jkWeNlrq+eJZyY2oS68SU1Z/7/myXM4lo9716laOFAVStCQ==",
+      "optional": true
     },
     "private": {
       "version": "0.1.8",
@@ -2563,9 +2568,9 @@
           }
         },
         "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==",
           "dev": true
         },
         "safe-buffer": {
@@ -3008,7 +3013,8 @@
     "voc": {
       "version": "1.1.0",
       "resolved": "https://registry.npmjs.org/voc/-/voc-1.1.0.tgz",
-      "integrity": "sha512-fthgd8OJLqq8vPcLjElTk6Rcl2e3v5ekcXauImaqEnQqd5yUWKg1+ZOBgS2KTWuVKcuvZMQq4TDptiT1uYddUA=="
+      "integrity": "sha512-fthgd8OJLqq8vPcLjElTk6Rcl2e3v5ekcXauImaqEnQqd5yUWKg1+ZOBgS2KTWuVKcuvZMQq4TDptiT1uYddUA==",
+      "optional": true
     },
     "webcharts": {
       "version": "1.11.6",