diff --git a/package.json b/package.json
index 222d5ba4..f220ce73 100644
--- a/package.json
+++ b/package.json
@@ -82,7 +82,7 @@
     "mocha": "6.1.2",
     "qunit-dom": "1.6.0",
     "semantic-release": "15.13.30",
-    "typescript": "3.2.4"
+    "typescript": "4.3.5"
   },
   "engines": {
     "node": ">= 8"
diff --git a/yarn.lock b/yarn.lock
index fbc177dd..df327642 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -12783,10 +12783,10 @@ typedarray@^0.0.6:
   resolved "https://registry.yarnpkg.com/typedarray/-/typedarray-0.0.6.tgz#867ac74e3864187b1d3d47d996a78ec5c8830777"
   integrity sha1-hnrHTjhkGHsdPUfZlqeOxciDB3c=
 
-typescript@3.2.4:
-  version "3.2.4"
-  resolved "https://registry.yarnpkg.com/typescript/-/typescript-3.2.4.tgz#c585cb952912263d915b462726ce244ba510ef3d"
-  integrity sha512-0RNDbSdEokBeEAkgNbxJ+BLwSManFy9TeXz8uW+48j/xhEXv1ePME60olyzw2XzUqUBNAYFeJadIqAgNqIACwg==
+typescript@4.3.5:
+  version "4.3.5"
+  resolved "https://registry.yarnpkg.com/typescript/-/typescript-4.3.5.tgz#4d1c37cc16e893973c45a06886b7113234f119f4"
+  integrity sha512-DqQgihaQ9cUrskJo9kIyW/+g0Vxsk8cDtZ52a3NGh0YNTfpUSArXSohyUGnvbPazEPLu398C0UxmKSOrPumUzA==
 
 typescript@~3.4.3:
   version "3.4.5"