diff --git a/package.json b/package.json
index b2ffeed..d5e8170 100644
--- a/package.json
+++ b/package.json
@@ -37,7 +37,7 @@
     "remark-stringify": "7.0.4",
     "source-map-support": "0.5.11",
     "ts-node": "8.1.1",
-    "typescript": "3.3.3333",
+    "typescript": "4.3.4",
     "unified": "7.1.0"
   },
   "dependencies": {
diff --git a/yarn.lock b/yarn.lock
index 68e668c..21ae1df 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -7513,10 +7513,10 @@ typedarray@^0.0.6:
   resolved "https://registry.yarnpkg.com/typedarray/-/typedarray-0.0.6.tgz#867ac74e3864187b1d3d47d996a78ec5c8830777"
   integrity sha1-hnrHTjhkGHsdPUfZlqeOxciDB3c=
 
-typescript@3.3.3333:
-  version "3.3.3333"
-  resolved "https://registry.yarnpkg.com/typescript/-/typescript-3.3.3333.tgz#171b2c5af66c59e9431199117a3bcadc66fdcfd6"
-  integrity sha512-JjSKsAfuHBE/fB2oZ8NxtRTk5iGcg6hkYXMnZ3Wc+b2RSqejEqTaem11mHASMnFilHrax3sLK0GDzcJrekZYLw==
+typescript@4.3.4:
+  version "4.3.4"
+  resolved "https://registry.yarnpkg.com/typescript/-/typescript-4.3.4.tgz#3f85b986945bcf31071decdd96cf8bfa65f9dcbc"
+  integrity sha512-uauPG7XZn9F/mo+7MrsRjyvbxFpzemRjKEZXS4AK83oP2KKOJPvb+9cO/gmnv8arWZvhnjVOXz7B49m1l0e9Ew==
 
 uglify-js@^3.1.4:
   version "3.13.9"