diff --git a/package-lock.json b/package-lock.json
index bc2db7a..6071ca6 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -549,9 +549,9 @@
       }
     },
     "acorn": {
-      "version": "5.7.3",
-      "resolved": "http://registry.npm.taobao.org/acorn/download/acorn-5.7.3.tgz",
-      "integrity": "sha1-Z6ojG/iBKXS4UjWpZ3Hra9B+onk=",
+      "version": "5.7.4",
+      "resolved": "https://registry.npmjs.org/acorn/-/acorn-5.7.4.tgz",
+      "integrity": "sha512-1D++VG7BhrtvQpNbBzovKNc1FLGGEE/oGe7b9xJm/RFHMBeUaUGpluV9RLjZa47YFdPcDAenEYuq9pQPcMdLJg==",
       "dev": true
     },
     "acorn-es7-plugin": {
@@ -4905,9 +4905,9 @@
       },
       "dependencies": {
         "acorn": {
-          "version": "7.0.0",
-          "resolved": "https://registry.npmjs.org/acorn/-/acorn-7.0.0.tgz",
-          "integrity": "sha512-PaF/MduxijYYt7unVGRuds1vBC9bFxbNf+VWqhOClfdgy7RlVkQqt610ig1/yxTgsDIfW1cWDel5EBbOy3jdtQ==",
+          "version": "7.1.1",
+          "resolved": "https://registry.npmjs.org/acorn/-/acorn-7.1.1.tgz",
+          "integrity": "sha512-add7dgA5ppRPxCFJoAGfMDi7PIBXq1RtGo7BhbLaxwrXPOmw8gq48Y9ozT01hUKy9byMjlR20EJhu5zlkErEkg==",
           "dev": true
         }
       }