diff --git a/package.json b/package.json
index 0c322d8..386b3e9 100644
--- a/package.json
+++ b/package.json
@@ -106,7 +106,7 @@
     "stylelint": "^9.1.3",
     "stylelint-config-css-modules": "^1.2.0",
     "stylelint-config-standard": "^18.2.0",
-    "supertest": "^3.0.0",
+    "supertest": "^4.0.0",
     "uglifyjs-webpack-plugin": "^1.2.4",
     "webpack": "^4.4.1",
     "webpack-cli": "^2.0.13",