diff --git a/package-lock.json b/package-lock.json
index e81def6..c8fcf33 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -16,30 +16,44 @@
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@@ -70,12 +84,31 @@
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@@ -219,10 +252,25 @@
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@@ -262,9 +316,9 @@
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@@ -279,6 +333,21 @@
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@@ -289,6 +358,15 @@
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@@ -327,6 +405,40 @@
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@@ -400,6 +512,12 @@
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@@ -411,9 +529,9 @@
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@@ -435,6 +553,30 @@
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@@ -532,84 +741,63 @@
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+      "integrity": "sha1-mkpoFMrBwM1zNgqV8yCDyOpHRbc=",
+      "dev": true,
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+      "resolved": "https://registry.npmjs.org/picomatch/-/picomatch-2.3.1.tgz",
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+      "resolved": "https://registry.npmjs.org/rechoir/-/rechoir-0.7.1.tgz",
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+      "requires": {
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+          "resolved": "https://registry.npmjs.org/resolve/-/resolve-1.22.0.tgz",
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+          "dev": true,
+          "requires": {
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+            "path-parse": "^1.0.7",
+            "supports-preserve-symlinks-flag": "^1.0.0"
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+      "resolved": "https://registry.npmjs.org/resolve-dir/-/resolve-dir-1.0.1.tgz",
+      "integrity": "sha1-eaQGRMNivoLybv/nOcm7U4IEb0M=",
+      "dev": true,
+      "requires": {
+        "expand-tilde": "^2.0.0",
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       "resolved": "https://registry.npmjs.org/rimraf/-/rimraf-2.1.4.tgz",
@@ -816,6 +1329,12 @@
         "graceful-fs": "~1"
       }
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+      "resolved": "https://registry.npmjs.org/safer-buffer/-/safer-buffer-2.1.2.tgz",
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+      "dev": true
+    },
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@@ -837,6 +1356,36 @@
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       "dev": true
     },
+    "supports-color": {
+      "version": "7.2.0",
+      "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-7.2.0.tgz",
+      "integrity": "sha512-qpCAvRl9stuOHveKsn7HncJRvv501qIacKzQlO/+Lwxc9+0q2wLyv4Dfvt80/DPn2pqOBsJdDiogXGR9+OvwRw==",
+      "dev": true,
+      "requires": {
+        "has-flag": "^4.0.0"
+      }
+    },
+    "supports-preserve-symlinks-flag": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/supports-preserve-symlinks-flag/-/supports-preserve-symlinks-flag-1.0.0.tgz",
+      "integrity": "sha512-ot0WnXS9fgdkgIcePe6RHNk1WA8+muPa6cSjeR3V8K27q9BB1rTE3R1p7Hv0z1ZyAc8s6Vvv8DIyWf681MAt0w==",
+      "dev": true
+    },
+    "to-regex-range": {
+      "version": "5.0.1",
+      "resolved": "https://registry.npmjs.org/to-regex-range/-/to-regex-range-5.0.1.tgz",
+      "integrity": "sha512-65P7iz6X5yEr1cwcgvQxbbIw7Uk3gOy5dIdtZ4rDveLqhrdJP+Li/Hx6tyK0NEb+2GCyneCMJiGqrADCSNk8sQ==",
+      "dev": true,
+      "requires": {
+        "is-number": "^7.0.0"
+      }
+    },
+    "unc-path-regex": {
+      "version": "0.1.2",
+      "resolved": "https://registry.npmjs.org/unc-path-regex/-/unc-path-regex-0.1.2.tgz",
+      "integrity": "sha1-5z3T17DXxe2G+6xrCufYxqadUPo=",
+      "dev": true
+    },
     "underscore": {
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       "resolved": "https://registry.npmjs.org/underscore/-/underscore-1.6.0.tgz",
@@ -875,6 +1424,15 @@
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       "dev": true
     },
+    "v8flags": {
+      "version": "3.2.0",
+      "resolved": "https://registry.npmjs.org/v8flags/-/v8flags-3.2.0.tgz",
+      "integrity": "sha512-mH8etigqMfiGWdeXpaaqGfs6BndypxusHHcv2qSHyZkGEznCd/qAXCWWRzeowtL54147cktFOC4P5y+kl8d8Jg==",
+      "dev": true,
+      "requires": {
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+      }
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       "resolved": "https://registry.npmjs.org/walkdir/-/walkdir-0.4.0.tgz",
@@ -882,10 +1440,13 @@
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-      "integrity": "sha1-RgwdoPgQED0DIam2M6+eV15kSG8=",
-      "dev": true
+      "version": "1.3.1",
+      "resolved": "https://registry.npmjs.org/which/-/which-1.3.1.tgz",
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+      "dev": true,
+      "requires": {
+        "isexe": "^2.0.0"
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diff --git a/package.json b/package.json
index b677a92..04e2cad 100644
--- a/package.json
+++ b/package.json
@@ -34,7 +34,7 @@
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     "grunt-contrib-coffee": "~0.7.0",
     "grunt-cli": "~0.1.8",
-    "grunt": "~0.4.1",
+    "grunt": "~1.5.2",
     "grunt-shell": "~0.2.2",
     "grunt-coffeelint": "0.0.6",
     "rimraf": "~2.1",