diff --git a/package.json b/package.json
index 156fdc8..48a1088 100644
--- a/package.json
+++ b/package.json
@@ -31,7 +31,7 @@
     "prettier": "^2.0.5",
     "pretty-quick": "^2.0.1",
     "ts-node": "^8.10.2",
-    "typescript": "^3.9.3"
+    "typescript": "^4.0.3"
   },
   "nodemonConfig": {
     "ignore": [
diff --git a/yarn.lock b/yarn.lock
index 6d48b6f..16e25a8 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1418,10 +1418,10 @@ typedarray-to-buffer@^3.1.5:
   dependencies:
     is-typedarray "^1.0.0"
 
-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@^4.0.3:
+  version "4.0.3"
+  resolved "https://registry.yarnpkg.com/typescript/-/typescript-4.0.3.tgz#153bbd468ef07725c1df9c77e8b453f8d36abba5"
+  integrity sha512-tEu6DGxGgRJPb/mVPIZ48e69xCn2yRmCgYmDugAVwmJ6o+0u1RI18eO7E7WBTLYLaEVVOhwQmcdhQHweux/WPg==
 
 undefsafe@^2.0.2:
   version "2.0.3"