diff --git a/package.json b/package.json
index 56e3383..ed21e45 100644
--- a/package.json
+++ b/package.json
@@ -38,7 +38,7 @@
     "prettier": "^1.14.2",
     "pretty-quick": "^1.6.0",
     "sequelize": "^4.38.0",
-    "superagent": "3.8.3",
+    "superagent": "4.0.0",
     "supertest": "3.1.0"
   },
   "devDependencies": {
diff --git a/yarn.lock b/yarn.lock
index 88a1841..709a09d 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1865,6 +1865,12 @@ combined-stream@1.0.6, combined-stream@~1.0.5:
   dependencies:
     delayed-stream "~1.0.0"
 
+combined-stream@^1.0.6:
+  version "1.0.7"
+  resolved "https://registry.yarnpkg.com/combined-stream/-/combined-stream-1.0.7.tgz#2d1d24317afb8abe95d6d2c0b07b57813539d828"
+  dependencies:
+    delayed-stream "~1.0.0"
+
 commander@2.8.x:
   version "2.8.1"
   resolved "https://registry.yarnpkg.com/commander/-/commander-2.8.1.tgz#06be367febfda0c330aa1e2a072d3dc9762425d4"
@@ -1956,7 +1962,7 @@ cookie@0.3.1:
   version "0.3.1"
   resolved "https://registry.yarnpkg.com/cookie/-/cookie-0.3.1.tgz#e7e0a1f9ef43b4c8ba925c5c5a96e806d16873bb"
 
-cookiejar@^2.1.0:
+cookiejar@^2.1.0, cookiejar@^2.1.2:
   version "2.1.2"
   resolved "https://registry.yarnpkg.com/cookiejar/-/cookiejar-2.1.2.tgz#dd8a235530752f988f9a0844f3fc589e3111125c"
 
@@ -2092,6 +2098,12 @@ debug@3.1.0, debug@^3.1.0, debug@~3.1.0:
   dependencies:
     ms "2.0.0"
 
+debug@^4.0.0:
+  version "4.1.0"
+  resolved "https://registry.yarnpkg.com/debug/-/debug-4.1.0.tgz#373687bffa678b38b1cd91f861b63850035ddc87"
+  dependencies:
+    ms "^2.1.1"
+
 decamelize@^1.0.0, decamelize@^1.1.1, decamelize@^1.1.2:
   version "1.2.0"
   resolved "https://registry.yarnpkg.com/decamelize/-/decamelize-1.2.0.tgz#f6534d15148269b20352e7bee26f501f9a191290"
@@ -2917,6 +2929,14 @@ form-data@^2.3.1, form-data@~2.3.1:
     combined-stream "1.0.6"
     mime-types "^2.1.12"
 
+form-data@^2.3.2:
+  version "2.3.3"
+  resolved "https://registry.yarnpkg.com/form-data/-/form-data-2.3.3.tgz#dcce52c05f644f298c6a7ab936bd724ceffbf3a6"
+  dependencies:
+    asynckit "^0.4.0"
+    combined-stream "^1.0.6"
+    mime-types "^2.1.12"
+
 formidable@^1.1.1, formidable@^1.2.0:
   version "1.2.1"
   resolved "https://registry.yarnpkg.com/formidable/-/formidable-1.2.1.tgz#70fb7ca0290ee6ff961090415f4b3df3d2082659"
@@ -4888,6 +4908,10 @@ mime@^1.4.1:
   version "1.6.0"
   resolved "https://registry.yarnpkg.com/mime/-/mime-1.6.0.tgz#32cd9e5c64553bd58d19a568af452acff04981b1"
 
+mime@^2.0.3:
+  version "2.3.1"
+  resolved "https://registry.yarnpkg.com/mime/-/mime-2.3.1.tgz#b1621c54d63b97c47d3cfe7f7215f7d64517c369"
+
 mimic-fn@^1.0.0:
   version "1.2.0"
   resolved "https://registry.yarnpkg.com/mimic-fn/-/mimic-fn-1.2.0.tgz#820c86a39334640e99516928bd03fca88057d022"
@@ -4968,6 +4992,10 @@ ms@2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/ms/-/ms-2.0.0.tgz#5608aeadfc00be6c2901df5f9861788de0d597c8"
 
+ms@^2.1.1:
+  version "2.1.1"
+  resolved "https://registry.yarnpkg.com/ms/-/ms-2.1.1.tgz#30a5864eb3ebb0a66f2ebe6d727af06a09d86e0a"
+
 mustache@^2.2.1:
   version "2.3.1"
   resolved "https://registry.yarnpkg.com/mustache/-/mustache-2.3.1.tgz#ef5db3c0d11f1640e9baa47f4e65ba0c3fcd82b9"
@@ -5763,6 +5791,14 @@ readable-stream@^2.0.0, readable-stream@^2.0.1, readable-stream@^2.0.2, readable
     string_decoder "~1.1.1"
     util-deprecate "~1.0.1"
 
+readable-stream@^3.0.3:
+  version "3.0.6"
+  resolved "https://registry.yarnpkg.com/readable-stream/-/readable-stream-3.0.6.tgz#351302e4c68b5abd6a2ed55376a7f9a25be3057a"
+  dependencies:
+    inherits "^2.0.3"
+    string_decoder "^1.1.1"
+    util-deprecate "^1.0.1"
+
 readdirp@^2.0.0:
   version "2.1.0"
   resolved "https://registry.yarnpkg.com/readdirp/-/readdirp-2.1.0.tgz#4ed0ad060df3073300c48440373f72d1cc642d78"
@@ -6533,7 +6569,7 @@ string.prototype.matchall@^2.0.0:
     has-symbols "^1.0.0"
     regexp.prototype.flags "^1.2.0"
 
-string_decoder@~1.1.1:
+string_decoder@^1.1.1, string_decoder@~1.1.1:
   version "1.1.1"
   resolved "https://registry.yarnpkg.com/string_decoder/-/string_decoder-1.1.1.tgz#9cf1611ba62685d7030ae9e4ba34149c3af03fc8"
   dependencies:
@@ -6590,20 +6626,19 @@ superagent@3.8.2:
     qs "^6.5.1"
     readable-stream "^2.0.5"
 
-superagent@3.8.3:
-  version "3.8.3"
-  resolved "https://registry.yarnpkg.com/superagent/-/superagent-3.8.3.tgz#460ea0dbdb7d5b11bc4f78deba565f86a178e128"
+superagent@4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/superagent/-/superagent-4.0.0.tgz#b9de499c0363acb53879cc42bd14ec26751050bb"
   dependencies:
     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 "^4.0.0"
+    form-data "^2.3.2"
     formidable "^1.2.0"
     methods "^1.1.1"
-    mime "^1.4.1"
+    mime "^2.0.3"
     qs "^6.5.1"
-    readable-stream "^2.3.5"
+    readable-stream "^3.0.3"
 
 supertest@3.1.0:
   version "3.1.0"
@@ -7007,7 +7042,7 @@ user-home@^1.1.1:
   version "1.1.1"
   resolved "https://registry.yarnpkg.com/user-home/-/user-home-1.1.1.tgz#2b5be23a32b63a7c9deb8d0f28d485724a3df190"
 
-util-deprecate@~1.0.1:
+util-deprecate@^1.0.1, util-deprecate@~1.0.1:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/util-deprecate/-/util-deprecate-1.0.2.tgz#450d4dc9fa70de732762fbd2d4a28981419a0ccf"