diff --git a/package.json b/package.json
index 5fc92e9..bf6b51c 100644
--- a/package.json
+++ b/package.json
@@ -38,7 +38,7 @@
     "@types/cookie-signature": "^1.0.3",
     "@types/got": "^9.4.4",
     "@types/node": "^12.0.2",
-    "@types/tough-cookie": "^2.3.5",
+    "@types/tough-cookie": "^4.0.1",
     "ava": "^2.2.0",
     "codecov": "^3.5.0",
     "got": "^9.6.0",