diff --git a/package.json b/package.json
index ce40535..848ee13 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": "^4.2.3",
     "yarpm": "^0.2.1"
   },
   "keywords": [
diff --git a/yarn.lock b/yarn.lock
index 47b182e..3498bac 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@^4.2.3:
+  version "4.2.3"
+  resolved "https://registry.yarnpkg.com/typescript/-/typescript-4.2.3.tgz#39062d8019912d43726298f09493d598048c1ce3"
+  integrity sha512-qOcYwxaByStAWrBf4x0fibwZvMRG+r4cQoTjbPtUlrWjBHbmCAww1i448U0GJ+3cNNEtebDteo/cHOR3xJ4wEw==
 
 union-value@^1.0.0:
   version "1.0.1"