diff --git a/package-lock.json b/package-lock.json
index a0f06719e..f3bdae683 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -851,12 +851,16 @@
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-      "integrity": "sha1-vWf5bAfvtjA7f+lMHpefiEeOCjk=",
+      "version": "6.0.5",
+      "resolved": "https://registry.npmjs.org/cross-spawn/-/cross-spawn-6.0.5.tgz",
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       "dev": true,
       "requires": {
-        "lru-cache": "^2.5.0"
+        "nice-try": "^1.0.4",
+        "path-key": "^2.0.1",
+        "semver": "^5.5.0",
+        "shebang-command": "^1.2.0",
+        "which": "^1.2.9"
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@@ -880,13 +884,10 @@
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-      "resolved": "https://registry.npmjs.org/dargs/-/dargs-4.1.0.tgz",
-      "integrity": "sha1-A6nbtLXC8Tm/FK5T8LiipqhvThc=",
-      "dev": true,
-      "requires": {
-        "number-is-nan": "^1.0.0"
-      }
+      "version": "6.1.0",
+      "resolved": "https://registry.npmjs.org/dargs/-/dargs-6.1.0.tgz",
+      "integrity": "sha512-5dVBvpBLBnPwSsYXqfybFyehMmC/EenKEcf23AhCTgTf48JFBbmJKqoZBsERDnjL0FyiVTYWdFsRfTLHxLyKdQ==",
+      "dev": true
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@@ -1960,23 +1961,67 @@
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-      "resolved": "https://registry.npmjs.org/grunt-contrib-sass/-/grunt-contrib-sass-1.0.0.tgz",
-      "integrity": "sha1-gGg4JRy8DhqU1k1RXN00z2dNcBs=",
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/grunt-contrib-sass/-/grunt-contrib-sass-2.0.0.tgz",
+      "integrity": "sha512-RxZ3dlZZTX4YBPu2zMu84NPYgJ2AYAlIdEqlBaixNVyLNbgvJBGUr5Gi0ec6IiOQbt/I/z7uZVN9HsRxgznIRw==",
       "dev": true,
       "requires": {
-        "async": "^0.9.0",
-        "chalk": "^1.0.0",
-        "cross-spawn": "^0.2.3",
-        "dargs": "^4.0.0",
-        "which": "^1.0.5"
+        "async": "^2.6.1",
+        "chalk": "^2.4.1",
+        "cross-spawn": "^6.0.5",
+        "dargs": "^6.0.0",
+        "which": "^1.3.1"
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+        "ansi-styles": {
+          "version": "3.2.1",
+          "resolved": "https://registry.npmjs.org/ansi-styles/-/ansi-styles-3.2.1.tgz",
+          "integrity": "sha512-VT0ZI6kZRdTh8YyJw3SMbYm/u+NqfsAxEpWO0Pf9sq8/e94WxxOpPKx9FR1FlyCtOVDNOQ+8ntlqFxiRc+r5qA==",
+          "dev": true,
+          "requires": {
+            "color-convert": "^1.9.0"
+          }
+        },
         "async": {
-          "version": "0.9.2",
-          "resolved": "https://registry.npmjs.org/async/-/async-0.9.2.tgz",
-          "integrity": "sha1-rqdNXmHB+JlhO/ZL2mbUx48v0X0=",
+          "version": "2.6.3",
+          "resolved": "https://registry.npmjs.org/async/-/async-2.6.3.tgz",
+          "integrity": "sha512-zflvls11DCy+dQWzTW2dzuilv8Z5X/pjfmZOWba6TNIVDm+2UDaJmXSOXlasHKfNBs8oo3M0aT50fDEWfKZjXg==",
+          "dev": true,
+          "requires": {
+            "lodash": "^4.17.14"
+          }
+        },
+        "chalk": {
+          "version": "2.4.2",
+          "resolved": "https://registry.npmjs.org/chalk/-/chalk-2.4.2.tgz",
+          "integrity": "sha512-Mti+f9lpJNcwF4tWV8/OrTTtF1gZi+f8FqlyAdouralcFWFQWF2+NgCHShjkCb+IFBLq9buZwE1xckQU4peSuQ==",
+          "dev": true,
+          "requires": {
+            "ansi-styles": "^3.2.1",
+            "escape-string-regexp": "^1.0.5",
+            "supports-color": "^5.3.0"
+          }
+        },
+        "has-flag": {
+          "version": "3.0.0",
+          "resolved": "https://registry.npmjs.org/has-flag/-/has-flag-3.0.0.tgz",
+          "integrity": "sha1-tdRU3CGZriJWmfNGfloH87lVuv0=",
           "dev": true
+        },
+        "lodash": {
+          "version": "4.17.20",
+          "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.20.tgz",
+          "integrity": "sha512-PlhdFcillOINfeV7Ni6oF1TAEayyZBoZ8bcshTHqOYJYlrqzRK5hagpagky5o4HfCzzd1TRkXPMFq6cKk9rGmA==",
+          "dev": true
+        },
+        "supports-color": {
+          "version": "5.5.0",
+          "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-5.5.0.tgz",
+          "integrity": "sha512-QjVjwdXIt408MIiAqCX4oUKsgU2EqAGzs2Ppkm4aQYbjm+ZEWEcW4SfFNTr4uMNZma0ey4f5lgLrkB0aX0QMow==",
+          "dev": true,
+          "requires": {
+            "has-flag": "^3.0.0"
+          }
         }
       }
     },
@@ -3432,12 +3477,6 @@
         "meow": "^3.3.0"
       }
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-    "lru-cache": {
-      "version": "2.7.3",
-      "resolved": "https://registry.npmjs.org/lru-cache/-/lru-cache-2.7.3.tgz",
-      "integrity": "sha1-bUUk6LlV+V1PW1iFHOId1y+06VI=",
-      "dev": true
-    },
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       "resolved": "https://registry.npmjs.org/map-obj/-/map-obj-1.0.1.tgz",
@@ -3686,6 +3725,12 @@
       "integrity": "sha1-IKMYwwy0X3H+et+/eyHJnBRy7xE=",
       "dev": true
     },
+    "nice-try": {
+      "version": "1.0.5",
+      "resolved": "https://registry.npmjs.org/nice-try/-/nice-try-1.0.5.tgz",
+      "integrity": "sha512-1nh45deeb5olNY7eX82BkPO7SSxR5SSYJiPTrTdFUVYwAl8CKMA5N9PjTYkHiRjisVcxcQ1HXdLhx2qxxJzLNQ==",
+      "dev": true
+    },
     "node-gyp": {
       "version": "3.8.0",
       "resolved": "https://registry.npmjs.org/node-gyp/-/node-gyp-3.8.0.tgz",
@@ -4039,6 +4084,12 @@
       "integrity": "sha1-F0uSaHNVNP+8es5r9TpanhtcX18=",
       "dev": true
     },
+    "path-key": {
+      "version": "2.0.1",
+      "resolved": "https://registry.npmjs.org/path-key/-/path-key-2.0.1.tgz",
+      "integrity": "sha1-QRyttXTFoUDTpLGRDUDYDMn0C0A=",
+      "dev": true
+    },
     "path-loader": {
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       "resolved": "https://registry.npmjs.org/path-loader/-/path-loader-1.0.10.tgz",
@@ -4693,6 +4744,21 @@
       "dev": true,
       "optional": true
     },
+    "shebang-command": {
+      "version": "1.2.0",
+      "resolved": "https://registry.npmjs.org/shebang-command/-/shebang-command-1.2.0.tgz",
+      "integrity": "sha1-RKrGW2lbAzmJaMOfNj/uXer98eo=",
+      "dev": true,
+      "requires": {
+        "shebang-regex": "^1.0.0"
+      }
+    },
+    "shebang-regex": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/shebang-regex/-/shebang-regex-1.0.0.tgz",
+      "integrity": "sha1-2kL0l0DAtC2yypcoVxyxkMmO/qM=",
+      "dev": true
+    },
     "signal-exit": {
       "version": "3.0.2",
       "resolved": "https://registry.npmjs.org/signal-exit/-/signal-exit-3.0.2.tgz",
diff --git a/package.json b/package.json
index e16d27aa1..183b782ce 100644
--- a/package.json
+++ b/package.json
@@ -41,7 +41,7 @@
     "grunt-contrib-clean": "1.1.0",
     "grunt-contrib-copy": "1.0.0",
     "grunt-contrib-imagemin": "1.0.1",
-    "grunt-contrib-sass": "1.0.0",
+    "grunt-contrib-sass": "2.0.0",
     "grunt-contrib-uglify": "3.4.0",
     "grunt-contrib-watch": "1.1.0",
     "grunt-gh-pages": "2.1.0",