diff --git a/package-lock.json b/package-lock.json
index d0db058b..14d1c135 100644
--- a/package-lock.json
+++ b/package-lock.json
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+      "resolved": "https://registry.npmjs.org/unc-path-regex/-/unc-path-regex-0.1.2.tgz",
+      "integrity": "sha1-5z3T17DXxe2G+6xrCufYxqadUPo="
+    },
     "underscore": {
       "version": "1.4.4",
       "resolved": "https://registry.npmjs.org/underscore/-/underscore-1.4.4.tgz",
       "integrity": "sha1-YaajIBBiKvoHljvzJSA88SI51gQ="
     },
     "underscore.string": {
-      "version": "2.2.1",
-      "resolved": "https://registry.npmjs.org/underscore.string/-/underscore.string-2.2.1.tgz",
-      "integrity": "sha1-18D6KvXVoaZ/QlPa7pgTLnM/Dxk="
+      "version": "3.3.5",
+      "resolved": "https://registry.npmjs.org/underscore.string/-/underscore.string-3.3.5.tgz",
+      "integrity": "sha512-g+dpmgn+XBneLmXXo+sGlW5xQEt4ErkS3mgeN2GFbremYeMBSJKr9Wf2KJplQVaiPY/f7FN6atosWYNm9ovrYg==",
+      "requires": {
+        "sprintf-js": "^1.0.3",
+        "util-deprecate": "^1.0.2"
+      }
     },
     "union-value": {
       "version": "1.0.1",
@@ -10686,6 +10930,30 @@
       "resolved": "https://registry.npmjs.org/use/-/use-3.1.1.tgz",
       "integrity": "sha512-cwESVXlO3url9YWlFW/TA9cshCEhtu7IKJ/p5soJ/gGpj7vbvFrAY/eIioQ6Dw23KjZhYgiIo8HOs1nQ2vr/oQ=="
     },
+    "utf-8-validate": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/utf-8-validate/-/utf-8-validate-2.0.0.tgz",
+      "integrity": "sha1-OPVjbXjC5Mwg4TJHDMTQa5IZLkQ=",
+      "optional": true,
+      "requires": {
+        "bindings": "~1.2.1",
+        "nan": "~2.4.0"
+      },
+      "dependencies": {
+        "bindings": {
+          "version": "1.2.1",
+          "resolved": "https://registry.npmjs.org/bindings/-/bindings-1.2.1.tgz",
+          "integrity": "sha1-FK1hE4EtLTfXLme0ystLtyZQXxE=",
+          "optional": true
+        },
+        "nan": {
+          "version": "2.4.0",
+          "resolved": "https://registry.npmjs.org/nan/-/nan-2.4.0.tgz",
+          "integrity": "sha1-+zxZ1F/k7/4hXwuJD4rfbrMtIjI=",
+          "optional": true
+        }
+      }
+    },
     "util-deprecate": {
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/util-deprecate/-/util-deprecate-1.0.2.tgz",
@@ -10716,6 +10984,14 @@
       "resolved": "https://registry.npmjs.org/utils-merge/-/utils-merge-1.0.1.tgz",
       "integrity": "sha1-n5VxD1CiZ5R7LMwSR0HBAoQn5xM="
     },
+    "v8flags": {
+      "version": "3.1.3",
+      "resolved": "https://registry.npmjs.org/v8flags/-/v8flags-3.1.3.tgz",
+      "integrity": "sha512-amh9CCg3ZxkzQ48Mhcb8iX7xpAfYJgePHxWMQCBWECpOSqJUXgY26ncA61UTV0BkPqfhcy6mzwCIoP4ygxpW8w==",
+      "requires": {
+        "homedir-polyfill": "^1.0.1"
+      }
+    },
     "validator": {
       "version": "9.4.1",
       "resolved": "https://registry.npmjs.org/validator/-/validator-9.4.1.tgz",
@@ -10861,9 +11137,12 @@
       "integrity": "sha1-xxMLan6gRpPoQs3J56Hyqjmjn4I="
     },
     "which": {
-      "version": "1.0.9",
-      "resolved": "https://registry.npmjs.org/which/-/which-1.0.9.tgz",
-      "integrity": "sha1-RgwdoPgQED0DIam2M6+eV15kSG8="
+      "version": "1.3.1",
+      "resolved": "https://registry.npmjs.org/which/-/which-1.3.1.tgz",
+      "integrity": "sha512-HxJdYWq1MTIQbJ3nw0cqssHoTNU267KlrDuGZ1WYlxDStUtKUhOaJmh112/TZmHxxUfuJqPXSOm7tDyas0OSIQ==",
+      "requires": {
+        "isexe": "^2.0.0"
+      }
     },
     "wide-align": {
       "version": "1.1.3",
diff --git a/package.json b/package.json
index 0445d6bd..17f80afb 100644
--- a/package.json
+++ b/package.json
@@ -21,7 +21,7 @@
     "ejs": "^2.6.1",
     "exponential-moving-average": "^1.0.0",
     "fft-js": "0.0.11",
-    "grunt": "^0.4.5",
+    "grunt": "^1.3.0",
     "grunt-contrib-clean": "^2.0.0",
     "grunt-contrib-watch": "^1.1.0",
     "grunt-html2js": "^0.7.1",