diff --git a/package.json b/package.json
index 10de554..f52927d 100644
--- a/package.json
+++ b/package.json
@@ -55,7 +55,7 @@
     "simple-websocket": "^9.0.0",
     "source-map-support": "^0.5.19",
     "ts-node": "^8.10.2",
-    "typescript": "^3.9.7",
+    "typescript": "^4.1.4",
     "websocket-stream": "^5.5.2"
   },
   "scripts": {