diff --git a/package.json b/package.json
index a093c5e..800c5f3 100644
--- a/package.json
+++ b/package.json
@@ -51,7 +51,7 @@
     "strip-ansi": "6.0.0",
     "ts-jest": "26.1.0",
     "ts-node": "8.10.2",
-    "typescript": "3.9.6"
+    "typescript": "4.0.3"
   },
   "engines": {
     "node": ">=8.0.0"
diff --git a/yarn.lock b/yarn.lock
index 45cfc84..4a5b43e 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -9677,10 +9677,10 @@ typedarray@^0.0.6:
   resolved "https://registry.yarnpkg.com/typedarray/-/typedarray-0.0.6.tgz#867ac74e3864187b1d3d47d996a78ec5c8830777"
   integrity sha1-hnrHTjhkGHsdPUfZlqeOxciDB3c=
 
-typescript@3.9.6:
-  version "3.9.6"
-  resolved "https://registry.yarnpkg.com/typescript/-/typescript-3.9.6.tgz#8f3e0198a34c3ae17091b35571d3afd31999365a"
-  integrity sha512-Pspx3oKAPJtjNwE92YS05HQoY7z2SFyOpHo9MqJor3BXAGNaPUs83CuVp9VISFkSjyRfiTpmKuAYGJB7S7hOxw==
+typescript@4.0.3:
+  version "4.0.3"
+  resolved "https://registry.yarnpkg.com/typescript/-/typescript-4.0.3.tgz#153bbd468ef07725c1df9c77e8b453f8d36abba5"
+  integrity sha512-tEu6DGxGgRJPb/mVPIZ48e69xCn2yRmCgYmDugAVwmJ6o+0u1RI18eO7E7WBTLYLaEVVOhwQmcdhQHweux/WPg==
 
 uglify-js@^3.1.4:
   version "3.7.7"