diff --git a/package-lock.json b/package-lock.json
index c2db3d6..56b9f80 100644
--- a/package-lock.json
+++ b/package-lock.json
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+      "version": "2.0.1",
+      "resolved": "https://registry.npmjs.org/grunt-legacy-util/-/grunt-legacy-util-2.0.1.tgz",
+      "integrity": "sha512-2bQiD4fzXqX8rhNdXkAywCadeqiPiay0oQny77wA2F3WF4grPJXCvAcyoWUJV+po/b15glGkxuSiQCK299UC2w==",
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       "requires": {
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-        "exit": "~0.1.1",
-        "getobject": "~0.1.0",
+        "async": "~3.2.0",
+        "exit": "~0.1.2",
+        "getobject": "~1.0.0",
         "hooker": "~0.2.3",
-        "lodash": "~0.9.2",
-        "underscore.string": "~2.2.1",
-        "which": "~1.0.5"
+        "lodash": "~4.17.21",
+        "underscore.string": "~3.3.5",
+        "which": "~2.0.2"
+      },
+      "dependencies": {
+        "lodash": {
+          "version": "4.17.21",
+          "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.21.tgz",
+          "integrity": "sha512-v2kDEe57lecTulaDIuNTPy3Ry4gLGJ6Z1O3vE1krgXZNrsQ+LFTGHVxVjcXPs17LhbZVGedAJv8XZ1tvj5FvSg==",
+          "dev": true
+        }
       }
     },
     "grunt-lib-phantomjs": {
@@ -3407,10 +3487,13 @@
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-      "version": "0.2.11",
-      "resolved": "https://registry.npmjs.org/iconv-lite/-/iconv-lite-0.2.11.tgz",
-      "integrity": "sha512-KhmFWgaQZY83Cbhi+ADInoUQ8Etn6BG5fikM9syeOjQltvR45h7cRKJ/9uvQEuD61I3Uju77yYce0/LhKVClQw==",
-      "dev": true
+      "version": "0.4.24",
+      "resolved": "https://registry.npmjs.org/iconv-lite/-/iconv-lite-0.4.24.tgz",
+      "integrity": "sha512-v3MXnZAcvnywkTUEZomIActle7RXXeedOR31wwl7VlyoXO4Qi9arvSenNQWne1TcRwhCL1HwLI21bEqdpj8/rA==",
+      "dev": true,
+      "requires": {
+        "safer-buffer": ">= 2.1.2 < 3"
+      }
     },
     "ieee754": {
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@@ -3917,13 +4000,13 @@
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-      "resolved": "https://registry.npmjs.org/js-yaml/-/js-yaml-2.0.5.tgz",
-      "integrity": "sha512-VEKcIksckDBUhg2JS874xVouiPkywVUh4yyUmLCDe1Zg3bCd6M+F1eGPenPeHLc2XC8pp9G8bsuofK0NeEqRkA==",
+      "version": "3.14.1",
+      "resolved": "https://registry.npmjs.org/js-yaml/-/js-yaml-3.14.1.tgz",
+      "integrity": "sha512-okMH7OXXJ7YrN9Ok3/SXrnu4iX9yOk+25nqX4imS2npuvTYDmo/QEZoqwZkYaIDk3jVvBOTOIEgEhaLOynBS9g==",
       "dev": true,
       "requires": {
-        "argparse": "~ 0.1.11",
-        "esprima": "~ 1.0.2"
+        "argparse": "^1.0.7",
+        "esprima": "^4.0.0"
       }
     },
     "jsbn": {
@@ -4837,9 +4920,9 @@
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-      "resolved": "https://registry.npmjs.org/nopt/-/nopt-1.0.10.tgz",
-      "integrity": "sha512-NWmpvLSqUrgrAC9HCuxEvb+PSloHpqVu+FqcO4eeF2h5qYRhA7ev6KvelyQAKtegUbC6RypJnlEOhd8vloNKYg==",
+      "version": "3.0.6",
+      "resolved": "https://registry.npmjs.org/nopt/-/nopt-3.0.6.tgz",
+      "integrity": "sha512-4GUt3kSEYmk4ITxzB/b9vaIDfUVWN/Ml1Fwl11IlnIG2iaJ9O6WXZ9SrYM9NLI8OCBieN2Y8SWC2oJV0RQ7qYg==",
       "dev": true,
       "requires": {
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@@ -8220,10 +8303,22 @@
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-      "version": "2.2.1",
-      "resolved": "https://registry.npmjs.org/underscore.string/-/underscore.string-2.2.1.tgz",
-      "integrity": "sha512-3FVmhXqelrj6gfgp3Bn6tOavJvW0dNH2T+heTD38JRxIrAbiuzbqjknszoOYj3DyFB1nWiLj208Qt2no/L4cIA==",
-      "dev": true
+      "version": "3.3.6",
+      "resolved": "https://registry.npmjs.org/underscore.string/-/underscore.string-3.3.6.tgz",
+      "integrity": "sha512-VoC83HWXmCrF6rgkyxS9GHv8W9Q5nhMKho+OadDJGzL2oDYbYEppBaCMH6pFlwLeqj2QS+hhkw2kpXkSdD1JxQ==",
+      "dev": true,
+      "requires": {
+        "sprintf-js": "^1.1.1",
+        "util-deprecate": "^1.0.2"
+      },
+      "dependencies": {
+        "sprintf-js": {
+          "version": "1.1.2",
+          "resolved": "https://registry.npmjs.org/sprintf-js/-/sprintf-js-1.1.2.tgz",
+          "integrity": "sha512-VE0SOVEHCk7Qc8ulkWw3ntAzXuqf7S2lvwQaDLRnUeIEaKNQJzV6BwmLKhOqT61aGhfUMrXeaBk+oDGCzvhcug==",
+          "dev": true
+        }
+      }
     },
     "unicode-length": {
       "version": "1.0.3",
@@ -8816,10 +8911,13 @@
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     "which": {
-      "version": "1.0.9",
-      "resolved": "https://registry.npmjs.org/which/-/which-1.0.9.tgz",
-      "integrity": "sha512-E87fdQ/eRJr9W1X4wTPejNy9zTW3FI2vpCZSJ/HAY+TkjKVC0TUm1jk6vn2Z7qay0DQy0+RBGdXxj+RmmiGZKQ==",
-      "dev": true
+      "version": "2.0.2",
+      "resolved": "https://registry.npmjs.org/which/-/which-2.0.2.tgz",
+      "integrity": "sha512-BLI3Tl1TW3Pvl70l3yq3Y64i+awpwXqsGBYWkkqMtnbXgrMD+yj7rhW0kuEDxzJaYXGjEW5ogapKNMEKNMjibA==",
+      "dev": true,
+      "requires": {
+        "isexe": "^2.0.0"
+      }
     },
     "window-size": {
       "version": "0.1.0",
diff --git a/package.json b/package.json
index f7ecede..f986b3f 100644
--- a/package.json
+++ b/package.json
@@ -37,7 +37,7 @@
   "devDependencies": {
     "bundle-collapser": "^1.1.0",
     "concat-stream": "^1.6.2",
-    "grunt": "^0.4.5",
+    "grunt": "^1.5.3",
     "grunt-browserify": "^4.0.1",
     "grunt-connect-proxy": "^0.2.0",
     "grunt-contrib-clean": "^0.6.0",