diff --git a/package-lock.json b/package-lock.json
index e6622f6..e3fc1c1 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -415,10 +415,21 @@
       "dev": true
     },
     "async": {
-      "version": "1.5.2",
-      "resolved": "https://registry.npm.taobao.org/async/download/async-1.5.2.tgz",
-      "integrity": "sha1-7GphrlZIDAw8skHJVhjiCJL5Zyo=",
-      "dev": true
+      "version": "2.6.4",
+      "resolved": "https://registry.npmjs.org/async/-/async-2.6.4.tgz",
+      "integrity": "sha512-mzo5dfJYwAn29PeiJ0zvwTo04zj8HDJj0Mn8TD7sno7q12prdbnasKJHhkm2c1LgrhlJ0teaea8860oxi51mGA==",
+      "dev": true,
+      "requires": {
+        "lodash": "^4.17.14"
+      },
+      "dependencies": {
+        "lodash": {
+          "version": "4.17.21",
+          "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.21.tgz",
+          "integrity": "sha512-v2kDEe57lecTulaDIuNTPy3Ry4gLGJ6Z1O3vE1krgXZNrsQ+LFTGHVxVjcXPs17LhbZVGedAJv8XZ1tvj5FvSg==",
+          "dev": true
+        }
+      }
     },
     "async-done": {
       "version": "1.3.2",
@@ -8765,6 +8776,14 @@
       "requires": {
         "async": "1.5.2",
         "is-number-like": "^1.0.3"
+      },
+      "dependencies": {
+        "async": {
+          "version": "1.5.2",
+          "resolved": "https://registry.npmjs.org/async/-/async-1.5.2.tgz",
+          "integrity": "sha1-7GphrlZIDAw8skHJVhjiCJL5Zyo=",
+          "dev": true
+        }
       }
     },
     "posix-character-classes": {
diff --git a/package.json b/package.json
index 4e9403f..4cda314 100644
--- a/package.json
+++ b/package.json
@@ -25,7 +25,7 @@
     "serve-favicon": "~2.4.2"
   },
   "devDependencies": {
-    "async": "^1.5.2",
+    "async": "^2.6.4",
     "browser-sync": "^2.18.6",
     "del": "^2.2.0",
     "ejs": "^2.5.7",