diff --git a/package.json b/package.json
index 47325cc..af13ddb 100644
--- a/package.json
+++ b/package.json
@@ -22,7 +22,7 @@
     "rollup-plugin-terser": "^5.1.1",
     "rollup-plugin-typescript": "^1.0.1",
     "ts-jest": "^24.0.2",
-    "typescript": "^3.5.3"
+    "typescript": "^4.1.4"
   },
   "files": [
     "dist",
diff --git a/yarn.lock b/yarn.lock
index d28419d..bf0ce76 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -4431,10 +4431,10 @@ type-fest@^0.8.1:
   resolved "https://registry.yarnpkg.com/type-fest/-/type-fest-0.8.1.tgz#09e249ebde851d3b1e48d27c105444667f17b83d"
   integrity sha512-4dbzIzqvjtgiM5rw1k5rEHtBANKmdudhGyBEajN01fEyhaAIhsoKNy6y7+IN93IfpFtwY9iqi7kD+xwKhQsNJA==
 
-typescript@^3.5.3:
-  version "3.8.3"
-  resolved "https://registry.yarnpkg.com/typescript/-/typescript-3.8.3.tgz#409eb8544ea0335711205869ec458ab109ee1061"
-  integrity sha512-MYlEfn5VrLNsgudQTVJeNaQFUAI7DkhnOjdpAp4T+ku1TfQClewlbSuTVHiA+8skNBgaf02TL/kLOvig4y3G8w==
+typescript@^4.1.4:
+  version "4.1.4"
+  resolved "https://registry.yarnpkg.com/typescript/-/typescript-4.1.4.tgz#f058636e2f4f83f94ddaae07b20fd5e14598432f"
+  integrity sha512-+Uru0t8qIRgjuCpiSPpfGuhHecMllk5Zsazj5LZvVsEStEjmIRRBZe+jHjGQvsgS7M1wONy2PQXd67EMyV6acg==
 
 uglify-js@^2.6.1:
   version "2.8.29"