diff --git a/package.json b/package.json
index 05293a4..90b61c0 100644
--- a/package.json
+++ b/package.json
@@ -54,7 +54,7 @@
     "ts-node": "^8.5.2",
     "tslint": "^5.20.1",
     "tslint-config-prettier": "^1.18.0",
-    "typescript": "^3.7.2"
+    "typescript": "^4.1.2"
   },
   "repository": {
     "type": "git",
diff --git a/yarn.lock b/yarn.lock
index 1743730..88e2724 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -5347,10 +5347,10 @@ typedarray@^0.0.6:
   resolved "https://registry.yarnpkg.com/typedarray/-/typedarray-0.0.6.tgz#867ac74e3864187b1d3d47d996a78ec5c8830777"
   integrity sha1-hnrHTjhkGHsdPUfZlqeOxciDB3c=
 
-typescript@^3.7.2:
-  version "3.7.2"
-  resolved "https://registry.yarnpkg.com/typescript/-/typescript-3.7.2.tgz#27e489b95fa5909445e9fef5ee48d81697ad18fb"
-  integrity sha512-ml7V7JfiN2Xwvcer+XAf2csGO1bPBdRbFCkYBczNZggrBZ9c7G3riSUeJmqEU5uOtXNPMhE3n+R4FA/3YOAWOQ==
+typescript@^4.1.2:
+  version "4.1.2"
+  resolved "https://registry.yarnpkg.com/typescript/-/typescript-4.1.2.tgz#6369ef22516fe5e10304aae5a5c4862db55380e9"
+  integrity sha512-thGloWsGH3SOxv1SoY7QojKi0tc+8FnOmiarEGMbd/lar7QOEd3hvlx3Fp5y6FlDUGl9L+pd4n2e+oToGMmhRQ==
 
 uglify-js@^3.1.4:
   version "3.6.1"