diff --git a/package-lock.json b/package-lock.json
index a40cd9b4..ffe51d83 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -6044,7 +6044,8 @@
         "ansi-regex": {
           "version": "2.1.1",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "aproba": {
           "version": "1.2.0",
@@ -6065,12 +6066,14 @@
         "balanced-match": {
           "version": "1.0.0",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "brace-expansion": {
           "version": "1.1.11",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "balanced-match": "1.0.0",
             "concat-map": "0.0.1"
@@ -6085,17 +6088,20 @@
         "code-point-at": {
           "version": "1.1.0",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "concat-map": {
           "version": "0.0.1",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "console-control-strings": {
           "version": "1.1.0",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "core-util-is": {
           "version": "1.0.2",
@@ -6212,7 +6218,8 @@
         "inherits": {
           "version": "2.0.3",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "ini": {
           "version": "1.3.5",
@@ -6224,6 +6231,7 @@
           "version": "1.0.0",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "number-is-nan": "1.0.1"
           }
@@ -6238,6 +6246,7 @@
           "version": "3.0.4",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "brace-expansion": "1.1.11"
           }
@@ -6245,12 +6254,14 @@
         "minimist": {
           "version": "0.0.8",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "minipass": {
           "version": "2.3.5",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "safe-buffer": "5.1.2",
             "yallist": "3.0.3"
@@ -6269,6 +6280,7 @@
           "version": "0.5.1",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "minimist": "0.0.8"
           }
@@ -6349,7 +6361,8 @@
         "number-is-nan": {
           "version": "1.0.1",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "object-assign": {
           "version": "4.1.1",
@@ -6361,6 +6374,7 @@
           "version": "1.4.0",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "wrappy": "1.0.2"
           }
@@ -6446,7 +6460,8 @@
         "safe-buffer": {
           "version": "5.1.2",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "safer-buffer": {
           "version": "2.1.2",
@@ -6482,6 +6497,7 @@
           "version": "1.0.2",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "code-point-at": "1.1.0",
             "is-fullwidth-code-point": "1.0.0",
@@ -6501,6 +6517,7 @@
           "version": "3.0.1",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "ansi-regex": "2.1.1"
           }
@@ -6544,12 +6561,14 @@
         "wrappy": {
           "version": "1.0.2",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "yallist": {
           "version": "3.0.3",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         }
       }
     },
@@ -7378,6 +7397,7 @@
     },
     "gulp-footer": {
       "version": "github:prebid/gulp-footer#ff2b46e6376c7f04900357ff9f7b30f219fe5f8a",
+      "from": "github:prebid/gulp-footer#ff2b46e6376c7f04900357ff9f7b30f219fe5f8a",
       "dev": true,
       "requires": {
         "event-stream": "3.3.4",
@@ -11981,9 +12001,9 @@
       "dev": true
     },
     "querystringify": {
-      "version": "0.0.3",
-      "resolved": "https://registry.npmjs.org/querystringify/-/querystringify-0.0.3.tgz",
-      "integrity": "sha1-DJ02+/jHpPces3CFd2NXemMzW+c=",
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/querystringify/-/querystringify-2.0.0.tgz",
+      "integrity": "sha512-eTPo5t/4bgaMNZxyjWx6N2a6AuE0mq51KWvpc7nU/MAqixcI6v6KrGUKES0HaomdnolQBBXU/++X6/QQ9KL4tw==",
       "dev": true
     },
     "randomatic": {
diff --git a/package.json b/package.json
old mode 100755
new mode 100644
index 6d597aec..9908047a
--- a/package.json
+++ b/package.json
@@ -80,7 +80,7 @@
     "mocha": "^5.0.0",
     "nightwatch": "^1.0.6",
     "opn": "^5.4.0",
-    "querystringify": "0.0.3",
+    "querystringify": "2.0.0",
     "sinon": "^4.1.3",
     "through2": "^2.0.3",
     "url-parse": "^1.0.5",