diff --git a/package-lock.json b/package-lock.json
index d628d0d..19ef729 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -3920,7 +3920,8 @@
         },
         "ansi-regex": {
           "version": "2.1.1",
-          "bundled": true
+          "bundled": true,
+          "optional": true
         },
         "aproba": {
           "version": "1.2.0",
@@ -4285,7 +4286,8 @@
         },
         "safe-buffer": {
           "version": "5.1.1",
-          "bundled": true
+          "bundled": true,
+          "optional": true
         },
         "safer-buffer": {
           "version": "2.1.2",
@@ -4333,6 +4335,7 @@
         "strip-ansi": {
           "version": "3.0.1",
           "bundled": true,
+          "optional": true,
           "requires": {
             "ansi-regex": "^2.0.0"
           }
@@ -4371,11 +4374,13 @@
         },
         "wrappy": {
           "version": "1.0.2",
-          "bundled": true
+          "bundled": true,
+          "optional": true
         },
         "yallist": {
           "version": "3.0.2",
-          "bundled": true
+          "bundled": true,
+          "optional": true
         }
       }
     },
@@ -7941,42 +7946,64 @@
       }
     },
     "superagent": {
-      "version": "3.8.3",
-      "resolved": "https://registry.npmjs.org/superagent/-/superagent-3.8.3.tgz",
-      "integrity": "sha512-GLQtLMCoEIK4eDv6OGtkOoSMt3D+oq0y3dsxMuYuDvaNUvuT8eFBuLmfR0iYYzHC1e8hpzC6ZsxbuP6DIalMFA==",
+      "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",
+        "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": "^2.3.5"
+        "mime": "^2.4.0",
+        "qs": "^6.6.0",
+        "readable-stream": "^3.0.6"
       },
       "dependencies": {
-        "debug": {
-          "version": "3.2.6",
-          "resolved": "https://registry.npmjs.org/debug/-/debug-3.2.6.tgz",
-          "integrity": "sha512-mel+jf7nrtEl5Pn1Qx46zARXKDpBbvzezse7p7LqINmdoIk8PYP5SySaxEmYv6TZ0JyEKA1hsCId6DIhgITtWQ==",
+        "mime": {
+          "version": "2.4.0",
+          "resolved": "https://registry.npmjs.org/mime/-/mime-2.4.0.tgz",
+          "integrity": "sha512-ikBcWwyqXQSHKtciCcctu9YfPbFYZ4+gbHEmE0Q8jzcTYQg5dHCr3g2wwAZjPoJfQVXZq6KXAjpXOTf5/cjT7w==",
+          "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": {
-            "ms": "^2.1.1"
+            "inherits": "^2.0.3",
+            "string_decoder": "^1.1.1",
+            "util-deprecate": "^1.0.1"
+          }
+        },
+        "string_decoder": {
+          "version": "1.2.0",
+          "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-1.2.0.tgz",
+          "integrity": "sha512-6YqyX6ZWEYguAxgZzHGL7SsCeGx3V2TtOTqZz1xSTSWnqsbWwbptafNyvf/ACquZUXV3DANr5BDIwNYe1mN42w==",
+          "dev": true,
+          "requires": {
+            "safe-buffer": "~5.1.0"
           }
         }
       }
     },
     "supertest": {
-      "version": "3.4.2",
-      "resolved": "https://registry.npmjs.org/supertest/-/supertest-3.4.2.tgz",
-      "integrity": "sha512-WZWbwceHUo2P36RoEIdXvmqfs47idNNZjCuJOqDz6rvtkk8ym56aU5oglORCpPeXGxT7l9rkJ41+O1lffQXYSA==",
+      "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": "^3.8.3"
+        "superagent": "^4.1.0"
       }
     },
     "supports-color": {
@@ -8840,7 +8867,7 @@
         },
         "minimist": {
           "version": "1.2.0",
-          "resolved": "http://registry.npmjs.org/minimist/-/minimist-1.2.0.tgz",
+          "resolved": "https://registry.npmjs.org/minimist/-/minimist-1.2.0.tgz",
           "integrity": "sha1-o1AIsg9BOD7sH7kU9M1d95omQoQ="
         },
         "module-deps": {
diff --git a/package.json b/package.json
index c55e1fd..84d0c73 100644
--- a/package.json
+++ b/package.json
@@ -63,7 +63,7 @@
     "eslint-plugin-react": "^7.12.4",
     "mocha": "^6.0.0",
     "phantomjs-prebuilt": "^2.1.16",
-    "supertest": "^3.4.2"
+    "supertest": "^4.0.0"
   },
   "babel": {
     "presets": [