diff --git a/package.json b/package.json
index 008a3e9f..7bb4a77e 100644
--- a/package.json
+++ b/package.json
@@ -35,7 +35,7 @@
     "travis-deploy-once": "5.0.11",
     "ts-loader": "6.0.3",
     "ts-node": "8.0.3",
-    "typescript": "3.2.4",
+    "typescript": "4.0.3",
     "webpack": "4.33.0"
   },
   "license": "MIT",
diff --git a/yarn.lock b/yarn.lock
index 92a2682f..d0067847 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -9675,10 +9675,10 @@ 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@4.0.3:
+  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 "3.10.4"