diff --git a/chapter6/package-lock.json b/chapter6/package-lock.json
index 4193c00..8275dcc 100644
--- a/chapter6/package-lock.json
+++ b/chapter6/package-lock.json
@@ -9308,6 +9308,12 @@
       "integrity": "sha1-nsYfeQSYdXB9aUFFlv2Qek1xHnM=",
       "dev": true
     },
+    "querystringify": {
+      "version": "2.2.0",
+      "resolved": "https://registry.npmjs.org/querystringify/-/querystringify-2.2.0.tgz",
+      "integrity": "sha512-FIqgj2EUvTa7R50u0rGsyTftzjYmv/a3hO345bZNrqabNqjtgiDMgmo4mkUjd+nzU5oF3dClKqFIPUKybUyqoQ==",
+      "dev": true
+    },
     "randomatic": {
       "version": "3.1.1",
       "resolved": "https://registry.npmjs.org/randomatic/-/randomatic-3.1.1.tgz",
@@ -10912,21 +10918,13 @@
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     },
     "url-parse": {
-      "version": "1.5.1",
-      "resolved": "https://registry.npmjs.org/url-parse/-/url-parse-1.5.1.tgz",
-      "integrity": "sha512-HOfCOUJt7iSYzEx/UqgtwKRMC6EU91NFhsCHMv9oM03VJcVo2Qrp8T8kI9D7amFf1cu+/3CEhgb3rF9zL7k85Q==",
+      "version": "1.5.10",
+      "resolved": "https://registry.npmjs.org/url-parse/-/url-parse-1.5.10.tgz",
+      "integrity": "sha512-WypcfiRhfeUP9vvF0j6rw0J3hrWrw6iZv3+22h6iRMJ/8z1Tj6XfLP4DsUix5MhMPnXpiHDoKyoZ/bdCkwBCiQ==",
       "dev": true,
       "requires": {
         "querystringify": "^2.1.1",
         "requires-port": "^1.0.0"
-      },
-      "dependencies": {
-        "querystringify": {
-          "version": "2.2.0",
-          "resolved": "https://registry.npmjs.org/querystringify/-/querystringify-2.2.0.tgz",
-          "integrity": "sha512-FIqgj2EUvTa7R50u0rGsyTftzjYmv/a3hO345bZNrqabNqjtgiDMgmo4mkUjd+nzU5oF3dClKqFIPUKybUyqoQ==",
-          "dev": true
-        }
       }
     },
     "use": {