diff --git a/package.json b/package.json
index e12d1a1..34981df 100644
--- a/package.json
+++ b/package.json
@@ -24,7 +24,7 @@
     "mocha": "^6.2.0",
     "sinon": "^4.0.2",
     "sinon-chai": "^2.8.0",
-    "supertest": "3.0.0",
+    "supertest": "4.0.2",
     "winston-spy": "^0.2.0"
   }
 }
diff --git a/yarn.lock b/yarn.lock
index f71f3e7..2203a61 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -269,9 +269,9 @@ formatio@1.2.0, formatio@^1.2.0:
   dependencies:
     samsam "1.x"
 
-formidable@^1.1.1:
-  version "1.1.1"
-  resolved "https://registry.yarnpkg.com/formidable/-/formidable-1.1.1.tgz#96b8886f7c3c3508b932d6bd70c4d3a88f35f1a9"
+formidable@^1.2.0:
+  version "1.2.1"
+  resolved "https://registry.yarnpkg.com/formidable/-/formidable-1.2.1.tgz#70fb7ca0290ee6ff961090415f4b3df3d2082659"
 
 fs.realpath@^1.0.0:
   version "1.0.0"
@@ -473,7 +473,7 @@ mem@^4.0.0:
     mimic-fn "^2.0.0"
     p-is-promise "^2.0.0"
 
-methods@^1.1.1, methods@~1.1.2:
+methods@^1.1.1, methods@^1.1.2:
   version "1.1.2"
   resolved "https://registry.yarnpkg.com/methods/-/methods-1.1.2.tgz#5529a4d67654134edcc5266656835b0f851afcee"
 
@@ -672,9 +672,9 @@ pathval@^1.0.0:
   version "1.1.0"
   resolved "https://registry.yarnpkg.com/pathval/-/pathval-1.1.0.tgz#b942e6d4bde653005ef6b71361def8727d0645e0"
 
-process-nextick-args@~1.0.6:
-  version "1.0.7"
-  resolved "https://registry.yarnpkg.com/process-nextick-args/-/process-nextick-args-1.0.7.tgz#150e20b756590ad3f91093f25a4f2ad8bff30ba3"
+process-nextick-args@~2.0.0:
+  version "2.0.1"
+  resolved "https://registry.yarnpkg.com/process-nextick-args/-/process-nextick-args-2.0.1.tgz#7820d9b16120cc55ca9ae7792680ae7dba6d7fe2"
 
 pump@^3.0.0:
   version "3.0.0"
@@ -687,16 +687,16 @@ qs@^6.5.1:
   version "6.5.1"
   resolved "https://registry.yarnpkg.com/qs/-/qs-6.5.1.tgz#349cdf6eef89ec45c12d7d5eb3fc0c870343a6d8"
 
-readable-stream@^2.0.5:
-  version "2.3.3"
-  resolved "https://registry.yarnpkg.com/readable-stream/-/readable-stream-2.3.3.tgz#368f2512d79f9d46fdfc71349ae7878bbc1eb95c"
+readable-stream@^2.3.5:
+  version "2.3.6"
+  resolved "https://registry.yarnpkg.com/readable-stream/-/readable-stream-2.3.6.tgz#b11c27d88b8ff1fbe070643cf94b0c79ae1b0aaf"
   dependencies:
     core-util-is "~1.0.0"
     inherits "~2.0.3"
     isarray "~1.0.0"
-    process-nextick-args "~1.0.6"
+    process-nextick-args "~2.0.0"
     safe-buffer "~5.1.1"
-    string_decoder "~1.0.3"
+    string_decoder "~1.1.1"
     util-deprecate "~1.0.1"
 
 require-directory@^2.1.1:
@@ -788,9 +788,9 @@ string-width@^3.0.0:
     is-fullwidth-code-point "^2.0.0"
     strip-ansi "^5.1.0"
 
-string_decoder@~1.0.3:
-  version "1.0.3"
-  resolved "https://registry.yarnpkg.com/string_decoder/-/string_decoder-1.0.3.tgz#0fc67d7c141825de94282dd536bec6b9bce860ab"
+string_decoder@~1.1.1:
+  version "1.1.1"
+  resolved "https://registry.yarnpkg.com/string_decoder/-/string_decoder-1.1.1.tgz#9cf1611ba62685d7030ae9e4ba34149c3af03fc8"
   dependencies:
     safe-buffer "~5.1.0"
 
@@ -820,27 +820,27 @@ strip-json-comments@2.0.1:
   version "2.0.1"
   resolved "https://registry.yarnpkg.com/strip-json-comments/-/strip-json-comments-2.0.1.tgz#3c531942e908c2697c0ec344858c286c7ca0a60a"
 
-superagent@^3.0.0:
-  version "3.7.0"
-  resolved "https://registry.yarnpkg.com/superagent/-/superagent-3.7.0.tgz#bd58bfde2cbc5305adb9ccbb6dacba18408629d6"
+superagent@^3.8.3:
+  version "3.8.3"
+  resolved "https://registry.yarnpkg.com/superagent/-/superagent-3.8.3.tgz#460ea0dbdb7d5b11bc4f78deba565f86a178e128"
   dependencies:
     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"
+    formidable "^1.2.0"
     methods "^1.1.1"
     mime "^1.4.1"
     qs "^6.5.1"
-    readable-stream "^2.0.5"
+    readable-stream "^2.3.5"
 
-supertest@3.0.0:
-  version "3.0.0"
-  resolved "https://registry.yarnpkg.com/supertest/-/supertest-3.0.0.tgz#8d4bb68fd1830ee07033b1c5a5a9a4021c965296"
+supertest@4.0.2:
+  version "4.0.2"
+  resolved "https://registry.yarnpkg.com/supertest/-/supertest-4.0.2.tgz#c2234dbdd6dc79b6f15b99c8d6577b90e4ce3f36"
   dependencies:
-    methods "~1.1.2"
-    superagent "^3.0.0"
+    methods "^1.1.2"
+    superagent "^3.8.3"
 
 supports-color@6.0.0:
   version "6.0.0"