diff --git a/package.json b/package.json
index 07a2fbe..6d958c4 100644
--- a/package.json
+++ b/package.json
@@ -19,6 +19,6 @@
     "nyc": "^13.1.0",
     "rimraf": "^2.6.2",
     "tslint": "^5.11.0",
-    "typescript": "^3.2.2"
+    "typescript": "^4.3.5"
   }
 }