diff --git a/package.json b/package.json
index 811e164..4284cf6 100644
--- a/package.json
+++ b/package.json
@@ -36,6 +36,6 @@
     "jest": "26.0.1",
     "prettier": "2.0.5",
     "tslib": "2.0.0",
-    "typescript": "3.9.5"
+    "typescript": "4.2.3"
   }
 }
diff --git a/yarn.lock b/yarn.lock
index afa85d5..477d303 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -4154,10 +4154,10 @@ typedarray-to-buffer@^3.1.5:
   dependencies:
     is-typedarray "^1.0.0"
 
-typescript@3.9.5:
-  version "3.9.5"
-  resolved "https://registry.yarnpkg.com/typescript/-/typescript-3.9.5.tgz#586f0dba300cde8be52dd1ac4f7e1009c1b13f36"
-  integrity sha512-hSAifV3k+i6lEoCJ2k6R2Z/rp/H3+8sdmcn5NrS3/3kE7+RyZXm9aqvxWqjEXHAd8b0pShatpcdMTvEdvAJltQ==
+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==
 
 unicode-canonical-property-names-ecmascript@^1.0.4:
   version "1.0.4"