diff --git a/demo/package-lock.json b/demo/package-lock.json
index 7bc85fc..46c1ba0 100644
--- a/demo/package-lock.json
+++ b/demo/package-lock.json
@@ -706,6 +706,12 @@
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           "dev": true
+        },
+        "qs": {
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+          "resolved": "https://registry.npmjs.org/qs/-/qs-6.7.0.tgz",
+          "integrity": "sha512-VCdBRNFTX1fyE7Nb6FYoURo/SPe62QCaAyzJvUjwRaIsc+NePBEniHlvxFmmX56+HZphIGtV0XeCirBtpDrTyQ==",
+          "dev": true
         }
       }
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@@ -2000,6 +2006,12 @@
           "resolved": "https://registry.npmjs.org/array-flatten/-/array-flatten-1.1.1.tgz",
           "integrity": "sha1-ml9pkFGx5wczKPKgCJaLZOopVdI=",
           "dev": true
+        },
+        "qs": {
+          "version": "6.7.0",
+          "resolved": "https://registry.npmjs.org/qs/-/qs-6.7.0.tgz",
+          "integrity": "sha512-VCdBRNFTX1fyE7Nb6FYoURo/SPe62QCaAyzJvUjwRaIsc+NePBEniHlvxFmmX56+HZphIGtV0XeCirBtpDrTyQ==",
+          "dev": true
         }
       }
     },
@@ -5269,9 +5281,9 @@
       "dev": true
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     "qs": {
-      "version": "6.7.0",
-      "resolved": "https://registry.npmjs.org/qs/-/qs-6.7.0.tgz",
-      "integrity": "sha512-VCdBRNFTX1fyE7Nb6FYoURo/SPe62QCaAyzJvUjwRaIsc+NePBEniHlvxFmmX56+HZphIGtV0XeCirBtpDrTyQ==",
+      "version": "6.5.3",
+      "resolved": "https://registry.npmjs.org/qs/-/qs-6.5.3.tgz",
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@@ -5601,14 +5613,6 @@
         "tough-cookie": "~2.5.0",
         "tunnel-agent": "^0.6.0",
         "uuid": "^3.3.2"
-      },
-      "dependencies": {
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-          "version": "6.5.2",
-          "resolved": "https://registry.npmjs.org/qs/-/qs-6.5.2.tgz",
-          "integrity": "sha512-N5ZAX4/LxJmF+7wN74pUD6qAh9/wnvdQcjq9TZjevvXzSUo7bfmw91saqMjzGS2xq91/odN2dW/WOl7qQHNDGA==",
-          "dev": true
-        }
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     "require-directory": {