diff --git a/package-lock.json b/package-lock.json
index 229f733..b84f1b1 100644
--- a/package-lock.json
+++ b/package-lock.json
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@@ -3614,10 +3963,24 @@
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+    "path-root": {
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+      "resolved": "https://registry.npmjs.org/path-root/-/path-root-0.1.1.tgz",
+      "integrity": "sha1-mkpoFMrBwM1zNgqV8yCDyOpHRbc=",
+      "requires": {
+        "path-root-regex": "^0.1.0"
+      }
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+    "path-root-regex": {
+      "version": "0.1.2",
+      "resolved": "https://registry.npmjs.org/path-root-regex/-/path-root-regex-0.1.2.tgz",
+      "integrity": "sha1-v8zcjfWxLcUsi0PsONGNcsBLqW0="
+    },
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       "integrity": "sha1-WcRPfuSR2nBNpBXaWkBwuk+P5EE=",
+      "optional": true,
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@@ -3636,20 +3999,28 @@
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       "optional": true
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+      "version": "2.3.1",
+      "resolved": "https://registry.npmjs.org/picomatch/-/picomatch-2.3.1.tgz",
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+    },
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       "version": "2.3.0",
       "resolved": "https://registry.npmjs.org/pify/-/pify-2.3.0.tgz",
-      "integrity": "sha1-7RQaasBDqEnqWISY59yosVMw6Qw="
+      "integrity": "sha1-7RQaasBDqEnqWISY59yosVMw6Qw=",
+      "optional": true
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     "pinkie": {
       "version": "2.0.4",
       "resolved": "https://registry.npmjs.org/pinkie/-/pinkie-2.0.4.tgz",
-      "integrity": "sha1-clVrgM+g1IqXToDnckjoDtT3+HA="
+      "integrity": "sha1-clVrgM+g1IqXToDnckjoDtT3+HA=",
+      "optional": true
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     "pinkie-promise": {
       "version": "2.0.1",
       "resolved": "https://registry.npmjs.org/pinkie-promise/-/pinkie-promise-2.0.1.tgz",
       "integrity": "sha1-ITXW36ejWMBprJsXh3YogihFD/o=",
+      "optional": true,
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@@ -4242,6 +4613,7 @@
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       "integrity": "sha1-9f+qXs0pyzHAR0vKfXVra7KePyg=",
+      "optional": true,
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@@ -4252,6 +4624,7 @@
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       "integrity": "sha1-nWPBMnbAZZGNV/ACpX9AobZD+wI=",
+      "optional": true,
       "requires": {
         "find-up": "^1.0.0",
         "read-pkg": "^1.0.0"
@@ -4280,10 +4653,19 @@
         }
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+    "rechoir": {
+      "version": "0.7.1",
+      "resolved": "https://registry.npmjs.org/rechoir/-/rechoir-0.7.1.tgz",
+      "integrity": "sha512-/njmZ8s1wVeR6pjTZ+0nCnv8SpZNRMT2D1RLOJQESlYFDBvwpTA4KWJpZ+sBJ4+vhjILRcK7JIFdGCdxEAAitg==",
+      "requires": {
+        "resolve": "^1.9.0"
+      }
+    },
     "redent": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/redent/-/redent-1.0.0.tgz",
       "integrity": "sha1-z5Fqsf1fHxbfsggi3W7H9zDCr94=",
+      "optional": true,
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@@ -4312,6 +4694,7 @@
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       "integrity": "sha1-UhTFOpJtNVJwdSf7q0FdvAjQbdo=",
+      "optional": true,
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         "is-finite": "^1.0.0"
       }
@@ -4365,6 +4748,15 @@
         "path-parse": "^1.0.6"
       }
     },
+    "resolve-dir": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/resolve-dir/-/resolve-dir-1.0.1.tgz",
+      "integrity": "sha1-eaQGRMNivoLybv/nOcm7U4IEb0M=",
+      "requires": {
+        "expand-tilde": "^2.0.0",
+        "global-modules": "^1.0.0"
+      }
+    },
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       "resolved": "https://registry.npmjs.org/resolve-from/-/resolve-from-3.0.0.tgz",
@@ -4403,6 +4795,7 @@
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+      "optional": true,
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@@ -4411,6 +4804,7 @@
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+          "optional": true,
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@@ -4462,7 +4856,8 @@
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+      "integrity": "sha512-sauaDf/PZdVgrLTNYHRtpXa1iRiKcaebiKQ1BJdpQlWH2lCvexQdX55snPFyK7QzpudqbCI0qXFfOasHdyNDGQ==",
+      "optional": true
     },
     "semver-regex": {
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@@ -4518,7 +4913,8 @@
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-      "integrity": "sha1-tf3AjxKH6hF4Yo5BXiUTK3NkbG0="
+      "integrity": "sha1-tf3AjxKH6hF4Yo5BXiUTK3NkbG0=",
+      "optional": true
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@@ -4686,6 +5082,7 @@
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+      "optional": true,
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         "spdx-license-ids": "^3.0.0"
@@ -4694,12 +5091,14 @@
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+      "integrity": "sha512-2XQACfElKi9SlVb1CYadKDXvoajPgBVPn/gOQLrTvHdElaVhr7ZEbqJaRnJLVNeaI4cMEAgVCeBMKF6MWRDCRA==",
+      "optional": true
     },
     "spdx-expression-parse": {
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       "resolved": "https://registry.npmjs.org/spdx-expression-parse/-/spdx-expression-parse-3.0.0.tgz",
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+      "optional": true,
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@@ -4708,7 +5107,8 @@
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+      "integrity": "sha512-J+FWzZoynJEXGphVIS+XEh3kFSjZX/1i9gFBaWQcB+/tmpe2qUsSBABpcxqxnAxFdiUFEgAX1bjYGQvIZmoz9Q==",
+      "optional": true
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@@ -4860,6 +5260,7 @@
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       "integrity": "sha1-YhmoVhZSBJHzV4i9vxRHqZx+aw4=",
+      "optional": true,
       "requires": {
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@@ -4883,6 +5284,7 @@
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       "resolved": "https://registry.npmjs.org/strip-indent/-/strip-indent-1.0.1.tgz",
       "integrity": "sha1-DHlipq3vp7vUrDZkYKY4VSrhoKI=",
+      "optional": true,
       "requires": {
         "get-stdin": "^4.0.1"
       }
@@ -4926,6 +5328,11 @@
         "has-flag": "^3.0.0"
       }
     },
+    "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=="
+    },
     "svgo": {
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       "resolved": "https://registry.npmjs.org/svgo/-/svgo-1.3.2.tgz",
@@ -5087,7 +5494,8 @@
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       "resolved": "https://registry.npmjs.org/trim-newlines/-/trim-newlines-1.0.0.tgz",
-      "integrity": "sha1-WIeWa7WCpFA6QetST301ARgVphM="
+      "integrity": "sha1-WIeWa7WCpFA6QetST301ARgVphM=",
+      "optional": true
     },
     "trim-repeated": {
       "version": "1.0.0",
@@ -5123,12 +5531,17 @@
         "through": "^2.3.8"
       }
     },
+    "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="
+    },
     "underscore.string": {
-      "version": "3.3.5",
-      "resolved": "https://registry.npmjs.org/underscore.string/-/underscore.string-3.3.5.tgz",
-      "integrity": "sha512-g+dpmgn+XBneLmXXo+sGlW5xQEt4ErkS3mgeN2GFbremYeMBSJKr9Wf2KJplQVaiPY/f7FN6atosWYNm9ovrYg==",
+      "version": "3.3.6",
+      "resolved": "https://registry.npmjs.org/underscore.string/-/underscore.string-3.3.6.tgz",
+      "integrity": "sha512-VoC83HWXmCrF6rgkyxS9GHv8W9Q5nhMKho+OadDJGzL2oDYbYEppBaCMH6pFlwLeqj2QS+hhkw2kpXkSdD1JxQ==",
       "requires": {
-        "sprintf-js": "^1.0.3",
+        "sprintf-js": "^1.1.1",
         "util-deprecate": "^1.0.2"
       }
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@@ -5248,10 +5661,19 @@
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       "optional": true
     },
+    "v8flags": {
+      "version": "3.2.0",
+      "resolved": "https://registry.npmjs.org/v8flags/-/v8flags-3.2.0.tgz",
+      "integrity": "sha512-mH8etigqMfiGWdeXpaaqGfs6BndypxusHHcv2qSHyZkGEznCd/qAXCWWRzeowtL54147cktFOC4P5y+kl8d8Jg==",
+      "requires": {
+        "homedir-polyfill": "^1.0.1"
+      }
+    },
     "validate-npm-package-license": {
       "version": "3.0.4",
       "resolved": "https://registry.npmjs.org/validate-npm-package-license/-/validate-npm-package-license-3.0.4.tgz",
       "integrity": "sha512-DpKm2Ui/xN7/HQKCtpZxoRWBhZ9Z0kqtygG8XCgNQ8ZlDnxuQmWhj566j8fN4Cu3/JmbhsDo7fcAJq4s9h27Ew==",
+      "optional": true,
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         "spdx-expression-parse": "^3.0.0"
diff --git a/package.json b/package.json
index 1c3d168..63adf33 100644
--- a/package.json
+++ b/package.json
@@ -2,7 +2,7 @@
   "dependencies": {
     "autoprefixer": "^9.7.1",
     "cssnano": "^4.1.10",
-    "grunt": "^1.0.4",
+    "grunt": "^1.5.2",
     "grunt-contrib-cssmin": "^3.0.0",
     "grunt-contrib-imagemin": "^3.1.0",
     "grunt-contrib-less": "^2.0.0",