diff --git a/package-lock.json b/package-lock.json
index 320e4e0..b949365 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1653,47 +1653,47 @@
     "express": {
       "version": "4.15.3",
       "resolved": "https://registry.npmjs.org/express/-/express-4.15.3.tgz",
-      "integrity": "sha1-urZdDwOqgMNYQIly/HAPkWlEtmI=",
+      "integrity": "sha512-eyQPXY6coAN6NpdZhXZsAvoGSvWZtYq1S6YCBA86+RTwzzecvLvgPR/Jm+MR0otFUzLnmI/lfv79aoIMDpWW8w==",
       "requires": {
-        "accepts": "1.3.3",
+        "accepts": "~1.3.3",
         "array-flatten": "1.1.1",
         "content-disposition": "0.5.2",
-        "content-type": "1.0.2",
+        "content-type": "~1.0.2",
         "cookie": "0.3.1",
         "cookie-signature": "1.0.6",
         "debug": "2.6.7",
-        "depd": "1.1.0",
-        "encodeurl": "1.0.1",
-        "escape-html": "1.0.3",
-        "etag": "1.8.0",
-        "finalhandler": "1.0.3",
+        "depd": "~1.1.0",
+        "encodeurl": "~1.0.1",
+        "escape-html": "~1.0.3",
+        "etag": "~1.8.0",
+        "finalhandler": "~1.0.3",
         "fresh": "0.5.0",
         "merge-descriptors": "1.0.1",
-        "methods": "1.1.2",
-        "on-finished": "2.3.0",
-        "parseurl": "1.3.1",
+        "methods": "~1.1.2",
+        "on-finished": "~2.3.0",
+        "parseurl": "~1.3.1",
         "path-to-regexp": "0.1.7",
-        "proxy-addr": "1.1.4",
+        "proxy-addr": "~1.1.4",
         "qs": "6.4.0",
-        "range-parser": "1.2.0",
+        "range-parser": "~1.2.0",
         "send": "0.15.3",
         "serve-static": "1.12.3",
         "setprototypeof": "1.0.3",
-        "statuses": "1.3.1",
-        "type-is": "1.6.15",
+        "statuses": "~1.3.1",
+        "type-is": "~1.6.15",
         "utils-merge": "1.0.0",
-        "vary": "1.1.1"
+        "vary": "~1.1.1"
       },
       "dependencies": {
         "array-flatten": {
           "version": "1.1.1",
           "resolved": "https://registry.npmjs.org/array-flatten/-/array-flatten-1.1.1.tgz",
-          "integrity": "sha1-ml9pkFGx5wczKPKgCJaLZOopVdI="
+          "integrity": "sha512-PCVAQswWemu6UdxsDFFX/+gVeYqKAod3D3UVm91jHwynguOwAvYPhx8nNlM++NqRcK6CxxpUafjmhIdKiHibqg=="
         },
         "debug": {
           "version": "2.6.7",
           "resolved": "https://registry.npmjs.org/debug/-/debug-2.6.7.tgz",
-          "integrity": "sha1-krrR9tBbu2u6Isyoi80OyJTChh4=",
+          "integrity": "sha512-7YoSmTDGnXYkFJOvaYXfxcvNE25Y11uZ0X8Mo+pSXjHz/9WUlbCS4O6q+wj7lhubdNQQXxxsSOnlqlDG8SenXQ==",
           "requires": {
             "ms": "2.0.0"
           }
@@ -2511,11 +2511,6 @@
           "bundled": true,
           "optional": true
         },
-        "qs": {
-          "version": "6.4.0",
-          "bundled": true,
-          "optional": true
-        },
         "rc": {
           "version": "1.2.1",
           "bundled": true,
@@ -5366,7 +5361,7 @@
     "qs": {
       "version": "6.4.0",
       "resolved": "https://registry.npmjs.org/qs/-/qs-6.4.0.tgz",
-      "integrity": "sha1-E+JtKK1rD/qpExLNO/cI7TUecjM="
+      "integrity": "sha512-Qs6dfgR5OksK/PSxl1kGxiZgEQe8RqJMB9wZqVlKQfU+zzV+HY77pWJnoJENACKDQByWdpr8ZPIh1TBi4lpiSQ=="
     },
     "query-string": {
       "version": "4.3.4",
@@ -5667,9 +5662,9 @@
           }
         },
         "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": {