diff --git a/package-lock.json b/package-lock.json
index d7df111..8e53bb0 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -28,7 +28,7 @@
         "mocha": "8.2.0",
         "power-assert": "1.6.1",
         "prettier": "2.1.2",
-        "typescript": "4.0.3"
+        "typescript": "4.0.5"
       },
       "engines": {
         "node": ">=12"
@@ -4966,9 +4966,9 @@
       "dev": true
     },
     "node_modules/typescript": {
-      "version": "4.0.3",
-      "resolved": "https://registry.npm.taobao.org/typescript/download/typescript-4.0.3.tgz?cache=0&sync_timestamp=1603608626888&other_urls=https%3A%2F%2Fregistry.npm.taobao.org%2Ftypescript%2Fdownload%2Ftypescript-4.0.3.tgz",
-      "integrity": "sha1-FTu9Ro7wdyXB35x36LRT+NNqu6U=",
+      "version": "4.0.5",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-4.0.5.tgz",
+      "integrity": "sha512-ywmr/VrTVCmNTJ6iV2LwIrfG1P+lv6luD8sUJs+2eI9NLGigaN+nUQc13iHqisq7bra9lnmUSYqbJvegraBOPQ==",
       "dev": true,
       "bin": {
         "tsc": "bin/tsc",
@@ -9138,9 +9138,9 @@
       "dev": true
     },
     "typescript": {
-      "version": "4.0.3",
-      "resolved": "https://registry.npm.taobao.org/typescript/download/typescript-4.0.3.tgz?cache=0&sync_timestamp=1603608626888&other_urls=https%3A%2F%2Fregistry.npm.taobao.org%2Ftypescript%2Fdownload%2Ftypescript-4.0.3.tgz",
-      "integrity": "sha1-FTu9Ro7wdyXB35x36LRT+NNqu6U=",
+      "version": "4.0.5",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-4.0.5.tgz",
+      "integrity": "sha512-ywmr/VrTVCmNTJ6iV2LwIrfG1P+lv6luD8sUJs+2eI9NLGigaN+nUQc13iHqisq7bra9lnmUSYqbJvegraBOPQ==",
       "dev": true
     },
     "universal-deep-strict-equal": {
diff --git a/package.json b/package.json
index 89d2046..e45014d 100644
--- a/package.json
+++ b/package.json
@@ -61,6 +61,6 @@
     "mocha": "8.2.0",
     "power-assert": "1.6.1",
     "prettier": "2.1.2",
-    "typescript": "4.0.3"
+    "typescript": "4.0.5"
   }
 }