diff --git a/package.json b/package.json
index 425c9894..b1ab66df 100644
--- a/package.json
+++ b/package.json
@@ -52,7 +52,7 @@
         "typechain": "2.0.0",
         "typedoc": "0.19.1",
         "typedoc-plugin-sourcefile-url": "1.0.6",
-        "typescript": "4.0.2",
+        "typescript": "4.0.5",
         "wait-on": "5.2.0"
     },
     "scripts": {
diff --git a/yarn.lock b/yarn.lock
index 9e3478d8..652006c0 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -3960,10 +3960,10 @@ typedoc@0.19.1:
     shelljs "^0.8.4"
     typedoc-default-themes "^0.11.1"
 
-typescript@4.0.2:
-  version "4.0.2"
-  resolved "https://registry.yarnpkg.com/typescript/-/typescript-4.0.2.tgz#7ea7c88777c723c681e33bf7988be5d008d05ac2"
-  integrity sha512-e4ERvRV2wb+rRZ/IQeb3jm2VxBsirQLpQhdxplZ2MEzGvDkkMmPglecnNDfSUBivMjP93vRbngYYDQqQ/78bcQ==
+typescript@4.0.5:
+  version "4.0.5"
+  resolved "https://registry.yarnpkg.com/typescript/-/typescript-4.0.5.tgz#ae9dddfd1069f1cb5beb3ef3b2170dd7c1332389"
+  integrity sha512-ywmr/VrTVCmNTJ6iV2LwIrfG1P+lv6luD8sUJs+2eI9NLGigaN+nUQc13iHqisq7bra9lnmUSYqbJvegraBOPQ==
 
 typical@^2.6.0, typical@^2.6.1:
   version "2.6.1"