diff --git a/package-lock.json b/package-lock.json
index c299edc..f9e2d4f 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -3815,9 +3815,9 @@
       }
     },
     "typescript": {
-      "version": "3.6.2",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.6.2.tgz",
-      "integrity": "sha512-lmQ4L+J6mnu3xweP8+rOrUwzmN+MRAj7TgtJtDaXE5PMyX2kCrklhg3rvOsOIfNeAWMQWO2F1GPc1kMD2vLAfw==",
+      "version": "4.2.3",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-4.2.3.tgz",
+      "integrity": "sha512-qOcYwxaByStAWrBf4x0fibwZvMRG+r4cQoTjbPtUlrWjBHbmCAww1i448U0GJ+3cNNEtebDteo/cHOR3xJ4wEw==",
       "dev": true
     },
     "uglify-js": {
diff --git a/package.json b/package.json
index 383a8d8..30be625 100644
--- a/package.json
+++ b/package.json
@@ -16,7 +16,7 @@
     "glob": "7.1.4"
   },
   "devDependencies": {
-    "typescript": ">=3.6.2",
+    "typescript": ">=4.2.3",
     "tslint": ">=5.19.0",
     "ts-node": ">=8.3.0",
     "@types/chai": "4.2.0",