diff --git a/package-lock.json b/package-lock.json
index 7bd1162..99754bf 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -3284,7 +3284,7 @@
         },
         "strip-ansi": {
           "version": "3.0.1",
-          "resolved": "http://registry.npmjs.org/strip-ansi/-/strip-ansi-3.0.1.tgz",
+          "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-3.0.1.tgz",
           "integrity": "sha1-ajhfuIU9lS1f8F0Oiq+UJ43GPc8=",
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@@ -4203,9 +4203,9 @@
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-      "resolved": "https://registry.npmjs.org/mime/-/mime-1.6.0.tgz",
-      "integrity": "sha512-x0Vn8spI+wuJ1O6S7gnbaQg8Pxh4NNHb7KSINmEWKiPE4RKOplvijn+NkmYmmRgP68mc70j2EbeTFRsrswaQeg==",
+      "version": "2.4.0",
+      "resolved": "https://registry.npmjs.org/mime/-/mime-2.4.0.tgz",
+      "integrity": "sha512-ikBcWwyqXQSHKtciCcctu9YfPbFYZ4+gbHEmE0Q8jzcTYQg5dHCr3g2wwAZjPoJfQVXZq6KXAjpXOTf5/cjT7w==",
       "dev": true
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@@ -4413,23 +4413,6 @@
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-    "node-pre-gyp": {
-      "version": "0.10.2",
-      "resolved": "https://registry.npmjs.org/node-pre-gyp/-/node-pre-gyp-0.10.2.tgz",
-      "integrity": "sha512-16lql9QTqs6KsB9fl3neWyZm02KxIKdI9FlJjrB0y7eMTP5Nyz+xalwPbOlw3iw7EejllJPmlJSnY711PLD1ug==",
-      "requires": {
-        "detect-libc": "^1.0.2",
-        "mkdirp": "^0.5.1",
-        "needle": "^2.2.0",
-        "nopt": "^4.0.1",
-        "npm-packlist": "^1.1.6",
-        "npmlog": "^4.0.2",
-        "rc": "^1.2.7",
-        "rimraf": "^2.6.1",
-        "semver": "^5.3.0",
-        "tar": "^4"
-      }
-    },
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       "version": "4.0.1",
       "resolved": "https://registry.npmjs.org/nopt/-/nopt-4.0.1.tgz",
@@ -4542,6 +4525,7 @@
           "version": "0.1.4",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "kind-of": "^3.0.2",
             "longest": "^1.0.1",
@@ -4866,7 +4850,8 @@
         "is-buffer": {
           "version": "1.1.6",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "is-builtin-module": {
           "version": "1.0.0",
@@ -4950,6 +4935,7 @@
           "version": "3.2.2",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "is-buffer": "^1.1.5"
           }
@@ -4996,7 +4982,8 @@
         "longest": {
           "version": "1.0.1",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "lru-cache": {
           "version": "4.1.3",
@@ -5262,7 +5249,8 @@
         "repeat-string": {
           "version": "1.6.1",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "require-directory": {
           "version": "2.1.1",
@@ -6907,6 +6895,25 @@
         "nan": "~2.10.0",
         "node-pre-gyp": "^0.10.3",
         "request": "^2.87.0"
+      },
+      "dependencies": {
+        "node-pre-gyp": {
+          "version": "0.10.3",
+          "resolved": "https://registry.npmjs.org/node-pre-gyp/-/node-pre-gyp-0.10.3.tgz",
+          "integrity": "sha512-d1xFs+C/IPS8Id0qPTZ4bUT8wWryfR/OzzAFxweG+uLN85oPzyo2Iw6bVlLQ/JOdgNonXLCoRyqDzDWq4iw72A==",
+          "requires": {
+            "detect-libc": "^1.0.2",
+            "mkdirp": "^0.5.1",
+            "needle": "^2.2.1",
+            "nopt": "^4.0.1",
+            "npm-packlist": "^1.1.6",
+            "npmlog": "^4.0.2",
+            "rc": "^1.2.7",
+            "rimraf": "^2.6.1",
+            "semver": "^5.3.0",
+            "tar": "^4"
+          }
+        }
       }
     },
     "sshpk": {
@@ -6999,42 +7006,75 @@
       "integrity": "sha1-PFMZQukIwml8DsNEhYwobHygpgo="
     },
     "superagent": {
-      "version": "3.8.2",
-      "resolved": "https://registry.npmjs.org/superagent/-/superagent-3.8.2.tgz",
-      "integrity": "sha512-gVH4QfYHcY3P0f/BZzavLreHW3T1v7hG9B+hpMQotGQqurOvhv87GcMCd6LWySmBuf+BDR44TQd0aISjVHLeNQ==",
+      "version": "4.1.0",
+      "resolved": "https://registry.npmjs.org/superagent/-/superagent-4.1.0.tgz",
+      "integrity": "sha512-FT3QLMasz0YyCd4uIi5HNe+3t/onxMyEho7C3PSqmti3Twgy2rXT4fmkTz6wRL6bTF4uzPcfkUCa8u4JWHw8Ag==",
       "dev": true,
       "requires": {
         "component-emitter": "^1.2.0",
-        "cookiejar": "^2.1.0",
-        "debug": "^3.1.0",
-        "extend": "^3.0.0",
-        "form-data": "^2.3.1",
-        "formidable": "^1.1.1",
+        "cookiejar": "^2.1.2",
+        "debug": "^4.1.0",
+        "form-data": "^2.3.3",
+        "formidable": "^1.2.0",
         "methods": "^1.1.1",
-        "mime": "^1.4.1",
-        "qs": "^6.5.1",
-        "readable-stream": "^2.0.5"
+        "mime": "^2.4.0",
+        "qs": "^6.6.0",
+        "readable-stream": "^3.0.6"
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       "dependencies": {
         "debug": {
-          "version": "3.1.0",
-          "resolved": "https://registry.npmjs.org/debug/-/debug-3.1.0.tgz",
-          "integrity": "sha512-OX8XqP7/1a9cqkxYw2yXss15f26NKWBpDXQd0/uK/KPqdQhxbPa994hnzjcE2VqQpDslf55723cKPUOGSmMY3g==",
+          "version": "4.1.1",
+          "resolved": "https://registry.npmjs.org/debug/-/debug-4.1.1.tgz",
+          "integrity": "sha512-pYAIzeRo8J6KPEaJ0VWOh5Pzkbw/RetuzehGM7QRRX5he4fPHx2rdKMB256ehJCkX+XRQm16eZLqLNS8RSZXZw==",
           "dev": true,
           "requires": {
-            "ms": "2.0.0"
+            "ms": "^2.1.1"
+          }
+        },
+        "form-data": {
+          "version": "2.3.3",
+          "resolved": "https://registry.npmjs.org/form-data/-/form-data-2.3.3.tgz",
+          "integrity": "sha512-1lLKB2Mu3aGP1Q/2eCOx0fNbRMe7XdwktwOruhfqqd0rIJWwN4Dh+E3hrPSlDCXnSR7UtZ1N38rVXm+6+MEhJQ==",
+          "dev": true,
+          "requires": {
+            "asynckit": "^0.4.0",
+            "combined-stream": "^1.0.6",
+            "mime-types": "^2.1.12"
+          }
+        },
+        "ms": {
+          "version": "2.1.1",
+          "resolved": "https://registry.npmjs.org/ms/-/ms-2.1.1.tgz",
+          "integrity": "sha512-tgp+dl5cGk28utYktBsrFqA7HKgrhgPsg6Z/EfhWI4gl1Hwq8B/GmY/0oXZ6nF8hDVesS/FpnYaD/kOWhYQvyg==",
+          "dev": true
+        },
+        "qs": {
+          "version": "6.6.0",
+          "resolved": "https://registry.npmjs.org/qs/-/qs-6.6.0.tgz",
+          "integrity": "sha512-KIJqT9jQJDQx5h5uAVPimw6yVg2SekOKu959OCtktD3FjzbpvaPr8i4zzg07DOMz+igA4W/aNM7OV8H37pFYfA==",
+          "dev": true
+        },
+        "readable-stream": {
+          "version": "3.2.0",
+          "resolved": "https://registry.npmjs.org/readable-stream/-/readable-stream-3.2.0.tgz",
+          "integrity": "sha512-RV20kLjdmpZuTF1INEb9IA3L68Nmi+Ri7ppZqo78wj//Pn62fCoJyV9zalccNzDD/OuJpMG4f+pfMl8+L6QdGw==",
+          "dev": true,
+          "requires": {
+            "inherits": "^2.0.3",
+            "string_decoder": "^1.1.1",
+            "util-deprecate": "^1.0.1"
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     "supertest": {
-      "version": "3.1.0",
-      "resolved": "https://registry.npmjs.org/supertest/-/supertest-3.1.0.tgz",
-      "integrity": "sha512-O44AMnmJqx294uJQjfUmEyYOg7d9mylNFsMw/Wkz4evKd1njyPrtCN+U6ZIC7sKtfEVQhfTqFFijlXx8KP/Czw==",
+      "version": "4.0.0",
+      "resolved": "https://registry.npmjs.org/supertest/-/supertest-4.0.0.tgz",
+      "integrity": "sha512-e3UaSMkmVaPQ10MHqb5T9G1mb3L6MVUtLTxkVhKWndHfXyZylwtkjWXD9FzyHqlZ1/EPfeTJ+QDtmax5fb02cw==",
       "dev": true,
       "requires": {
-        "methods": "~1.1.2",
-        "superagent": "3.8.2"
+        "methods": "^1.1.2",
+        "superagent": "^4.1.0"
       }
     },
     "supports-color": {
diff --git a/package.json b/package.json
index 438f2b5..37f7045 100644
--- a/package.json
+++ b/package.json
@@ -51,7 +51,7 @@
     "nyc": "^13.1.0",
     "sinon": "^7.1.1",
     "sinon-chai": "^3.2.0",
-    "supertest": "^3.1.0",
+    "supertest": "^4.0.0",
     "wdio-mocha-framework": "^0.6.1",
     "wdio-phantomjs-service": "^0.2.2",
     "wdio-selenium-standalone-service": "0.0.11",