diff --git a/package.json b/package.json
index 123ec39..9f3e246 100644
--- a/package.json
+++ b/package.json
@@ -28,6 +28,6 @@
     "nyc": "^15.0.0",
     "rollup": "^2.0.0",
     "rollup-plugin-typescript2": "^0.27.0",
-    "typescript": "^3.7.5"
+    "typescript": "^4.0.2"
   }
 }