diff --git a/package.json b/package.json
index c154e42..e6339e2 100644
--- a/package.json
+++ b/package.json
@@ -24,7 +24,7 @@
     "flow-copy-source": "^2.0.2",
     "husky": "^1.2.1",
     "jest": "^23.6.0",
-    "supertest": "^3.0.0"
+    "supertest": "^4.0.0"
   },
   "peerDependencies": {
     "express": "^4.x.x"