diff --git a/demo/vue-2/package-lock.json b/demo/vue-2/package-lock.json
index 79e884f..e5ce562 100644
--- a/demo/vue-2/package-lock.json
+++ b/demo/vue-2/package-lock.json
@@ -442,9 +442,9 @@
       "dev": true
     },
     "async": {
-      "version": "2.6.3",
-      "resolved": "https://registry.npmjs.org/async/-/async-2.6.3.tgz",
-      "integrity": "sha512-zflvls11DCy+dQWzTW2dzuilv8Z5X/pjfmZOWba6TNIVDm+2UDaJmXSOXlasHKfNBs8oo3M0aT50fDEWfKZjXg==",
+      "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"
@@ -15683,14 +15683,6 @@
           "resolved": "https://registry.npmjs.org/astral-regex/-/astral-regex-1.0.0.tgz",
           "integrity": "sha512-+Ryf6g3BKoRc7jfp7ad8tM4TtMiaWvbF/1/sQcZPkkS7ag3D5nMBCe2UfOTONtAkaG0tO0ij3C5Lwmf1EiyjHg=="
         },
-        "async": {
-          "version": "2.6.3",
-          "resolved": "https://registry.npmjs.org/async/-/async-2.6.3.tgz",
-          "integrity": "sha512-zflvls11DCy+dQWzTW2dzuilv8Z5X/pjfmZOWba6TNIVDm+2UDaJmXSOXlasHKfNBs8oo3M0aT50fDEWfKZjXg==",
-          "requires": {
-            "lodash": "^4.17.14"
-          }
-        },
         "async-each": {
           "version": "1.0.3",
           "resolved": "https://registry.npmjs.org/async-each/-/async-each-1.0.3.tgz",
@@ -21837,7 +21829,6 @@
           "resolved": "https://registry.npmjs.org/portfinder/-/portfinder-1.0.28.tgz",
           "integrity": "sha512-Se+2isanIcEqf2XMHjyUKskczxbPH7dQnlMjXX6+dybayyHvAf/TCgyMRlzf/B6QDhAEFOGes0pzRo3by4AbMA==",
           "requires": {
-            "async": "^2.6.2",
             "debug": "^3.1.1",
             "mkdirp": "^0.5.5"
           },