diff --git a/package-lock.json b/package-lock.json
index e2113a9..977626b 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1605,9 +1605,9 @@
       "dev": true
     },
     "typescript": {
-      "version": "3.6.3",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.6.3.tgz",
-      "integrity": "sha512-N7bceJL1CtRQ2RiG0AQME13ksR7DiuQh/QehubYcghzv20tnh+MQnQIuJddTmsbqYj+dztchykemz0zFzlvdQw==",
+      "version": "4.3.5",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-4.3.5.tgz",
+      "integrity": "sha512-DqQgihaQ9cUrskJo9kIyW/+g0Vxsk8cDtZ52a3NGh0YNTfpUSArXSohyUGnvbPazEPLu398C0UxmKSOrPumUzA==",
       "dev": true
     },
     "universal-deep-strict-equal": {
diff --git a/package.json b/package.json
index f39d752..a87c82e 100644
--- a/package.json
+++ b/package.json
@@ -31,6 +31,6 @@
     "power-assert": "^1.4.4",
     "then-request": "^6.0.2",
     "ts-node": "^8.10.1",
-    "typescript": "^3.6.3"
+    "typescript": "^4.3.5"
   }
 }