diff --git a/package-lock.json b/package-lock.json
index 00d4ddd..ac30520 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -7363,9 +7363,9 @@
       "integrity": "sha512-Ka0DBegjuV9IPYFT1h0Qqk5U4pccebNIJCGl8C5uU7xtOs+jpJvKGAY4fHGK25hTmXZOEUl9Cnsg5cS6K/b5DA=="
     },
     "typescript": {
-      "version": "3.9.5",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.9.5.tgz",
-      "integrity": "sha512-hSAifV3k+i6lEoCJ2k6R2Z/rp/H3+8sdmcn5NrS3/3kE7+RyZXm9aqvxWqjEXHAd8b0pShatpcdMTvEdvAJltQ==",
+      "version": "4.3.5",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-4.3.5.tgz",
+      "integrity": "sha512-DqQgihaQ9cUrskJo9kIyW/+g0Vxsk8cDtZ52a3NGh0YNTfpUSArXSohyUGnvbPazEPLu398C0UxmKSOrPumUzA==",
       "dev": true
     },
     "uc.micro": {
diff --git a/package.json b/package.json
index cf03188..d618086 100644
--- a/package.json
+++ b/package.json
@@ -32,7 +32,7 @@
     "prettier": "^2.0.5",
     "shellcheck": "^0.4.2",
     "ts-node": "^8.10.2",
-    "typescript": "^3.9.5"
+    "typescript": "^4.3.5"
   },
   "scripts": {
     "lint": "npm run check-node-version && npm run lint:es && npm run lint:md && npm run lint:sh",