diff --git a/package.json b/package.json
index 1230bb0..ec0becf 100644
--- a/package.json
+++ b/package.json
@@ -63,7 +63,7 @@
     "ts-loader": "^7.0.5",
     "tsdx": "^0.13.2",
     "tslib": "^2.0.0",
-    "typescript": "^3.9.6"
+    "typescript": "^4.2.4"
   },
   "dependencies": {
     "material-ui-popup-state": "^1.6.1"
diff --git a/yarn.lock b/yarn.lock
index 4deb7f1..ac84068 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -11936,11 +11936,16 @@ typedarray@^0.0.6:
   resolved "https://registry.yarnpkg.com/typedarray/-/typedarray-0.0.6.tgz#867ac74e3864187b1d3d47d996a78ec5c8830777"
   integrity sha1-hnrHTjhkGHsdPUfZlqeOxciDB3c=
 
-typescript@^3.7.3, typescript@^3.9.6:
+typescript@^3.7.3:
   version "3.9.6"
   resolved "https://registry.yarnpkg.com/typescript/-/typescript-3.9.6.tgz#8f3e0198a34c3ae17091b35571d3afd31999365a"
   integrity sha512-Pspx3oKAPJtjNwE92YS05HQoY7z2SFyOpHo9MqJor3BXAGNaPUs83CuVp9VISFkSjyRfiTpmKuAYGJB7S7hOxw==
 
+typescript@^4.2.4:
+  version "4.2.4"
+  resolved "https://registry.yarnpkg.com/typescript/-/typescript-4.2.4.tgz#8610b59747de028fda898a8aef0e103f156d0961"
+  integrity sha512-V+evlYHZnQkaz8TRBuxTA92yZBPotr5H+WhQ7bD3hZUndx5tGOa1fuCgeSjxAzM1RiN5IzvadIXTVefuuwZCRg==
+
 ua-parser-js@^0.7.18:
   version "0.7.21"
   resolved "https://registry.yarnpkg.com/ua-parser-js/-/ua-parser-js-0.7.21.tgz#853cf9ce93f642f67174273cc34565ae6f308777"