diff --git a/package.json b/package.json
index ce40535..1269580 100644
--- a/package.json
+++ b/package.json
@@ -39,7 +39,7 @@
     "rimraf": "^3.0.2",
     "ts-jest": "^25.2.0",
     "tslint": "^5.20.1",
-    "typescript": "^3.7.5",
+    "typescript": "^4.1.5",
     "yarpm": "^0.2.1"
   },
   "keywords": [
diff --git a/yarn.lock b/yarn.lock
index 47b182e..0cba1eb 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -4062,10 +4062,10 @@ typedarray-to-buffer@^3.1.5:
   dependencies:
     is-typedarray "^1.0.0"
 
-typescript@^3.7.5:
-  version "3.8.3"
-  resolved "https://registry.yarnpkg.com/typescript/-/typescript-3.8.3.tgz#409eb8544ea0335711205869ec458ab109ee1061"
-  integrity sha512-MYlEfn5VrLNsgudQTVJeNaQFUAI7DkhnOjdpAp4T+ku1TfQClewlbSuTVHiA+8skNBgaf02TL/kLOvig4y3G8w==
+typescript@^4.1.5:
+  version "4.1.5"
+  resolved "https://registry.yarnpkg.com/typescript/-/typescript-4.1.5.tgz#123a3b214aaff3be32926f0d8f1f6e704eb89a72"
+  integrity sha512-6OSu9PTIzmn9TCDiovULTnET6BgXtDYL4Gg4szY+cGsc3JP1dQL8qvE8kShTRx1NIw4Q9IBHlwODjkjWEtMUyA==
 
 union-value@^1.0.0:
   version "1.0.1"