diff --git a/package.json b/package.json
index 5e794f3..7001ec1 100644
--- a/package.json
+++ b/package.json
@@ -37,7 +37,7 @@
     "remark-stringify": "7.0.4",
     "source-map-support": "0.5.21",
     "ts-node": "8.10.2",
-    "typescript": "3.3.4000",
+    "typescript": "4.9.4",
     "unified": "7.1.0"
   },
   "dependencies": {
diff --git a/yarn.lock b/yarn.lock
index 3f13df2..290dcde 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -6986,10 +6986,10 @@ typedarray@^0.0.6:
   resolved "https://registry.yarnpkg.com/typedarray/-/typedarray-0.0.6.tgz#867ac74e3864187b1d3d47d996a78ec5c8830777"
   integrity sha512-/aCDEGatGvZ2BIk+HmLf4ifCJFwvKFNb9/JeZPMulfgFracn9QFcAf5GO8B/mweUjSoblS5In0cWhqpfs/5PQA==
 
-typescript@3.3.4000:
-  version "3.3.4000"
-  resolved "https://registry.yarnpkg.com/typescript/-/typescript-3.3.4000.tgz#76b0f89cfdbf97827e1112d64f283f1151d6adf0"
-  integrity sha512-jjOcCZvpkl2+z7JFn0yBOoLQyLoIkNZAs/fYJkUG6VKy6zLPHJGfQJYFHzibB6GJaF/8QrcECtlQ5cpvRHSMEA==
+typescript@4.9.4:
+  version "4.9.4"
+  resolved "https://registry.yarnpkg.com/typescript/-/typescript-4.9.4.tgz#a2a3d2756c079abda241d75f149df9d561091e78"
+  integrity sha512-Uz+dTXYzxXXbsFpM86Wh3dKCxrQqUcVMxwU54orwlJjOpO3ao8L7j5lH+dWfTwgCwIuM9GQ2kvVotzYJMXTBZg==
 
 uglify-js@^3.1.4:
   version "3.17.4"