diff --git a/package.json b/package.json
index 1cf744e..5d4b665 100644
--- a/package.json
+++ b/package.json
@@ -21,7 +21,7 @@
     "redux-saga": "^1.1.3",
     "reselect": "^4.0.0",
     "typesafe-actions": "^5.1.0",
-    "typescript": "3.9.3"
+    "typescript": "4.0.8"
   },
   "scripts": {
     "start": "react-scripts start",
diff --git a/yarn.lock b/yarn.lock
index 14037f1..3f03f9d 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -11996,10 +11996,10 @@ typescript-tuple@^2.2.1:
   dependencies:
     typescript-compare "^0.0.2"
 
-typescript@3.9.3:
-  version "3.9.3"
-  resolved "https://registry.yarnpkg.com/typescript/-/typescript-3.9.3.tgz#d3ac8883a97c26139e42df5e93eeece33d610b8a"
-  integrity sha512-D/wqnB2xzNFIcoBG9FG8cXRDjiqSTbG2wd8DMZeQyJlP1vfTkIxH4GKveWaEBYySKIg+USu+E+EDIR47SqnaMQ==
+typescript@4.0.8:
+  version "4.0.8"
+  resolved "https://registry.yarnpkg.com/typescript/-/typescript-4.0.8.tgz#5739105541db80a971fdbd0d56511d1a6f17d37f"
+  integrity sha512-oz1765PN+imfz1MlZzSZPtC/tqcwsCyIYA8L47EkRnRW97ztRk83SzMiWLrnChC0vqoYxSU1fcFUDA5gV/ZiPg==
 
 uglify-js@3.4.x:
   version "3.4.10"