diff --git a/package-lock.json b/package-lock.json
index 53b7f37..1f045d6 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -51,21 +51,12 @@
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-      "integrity": "sha1-ePlIXNFhtWbppsctcXDEJw6B22E=",
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@@ -449,10 +453,25 @@
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@@ -551,10 +579,16 @@
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+          "resolved": "https://registry.npmjs.org/sprintf-js/-/sprintf-js-1.1.2.tgz",
+          "integrity": "sha512-VE0SOVEHCk7Qc8ulkWw3ntAzXuqf7S2lvwQaDLRnUeIEaKNQJzV6BwmLKhOqT61aGhfUMrXeaBk+oDGCzvhcug==",
+          "dev": true
+        }
+      }
     },
     "union-value": {
       "version": "1.0.1",
@@ -3628,12 +4017,32 @@
         "extsprintf": "^1.2.0"
       }
     },
-    "which": {
-      "version": "1.0.9",
-      "resolved": "https://registry.npmjs.org/which/-/which-1.0.9.tgz",
-      "integrity": "sha1-RgwdoPgQED0DIam2M6+eV15kSG8=",
+    "websocket-driver": {
+      "version": "0.7.4",
+      "resolved": "https://registry.npmjs.org/websocket-driver/-/websocket-driver-0.7.4.tgz",
+      "integrity": "sha512-b17KeDIQVjvb0ssuSDF2cYXSg2iztliJ4B9WdsuB6J952qCPKmnVq4DyW5motImXHDC1cBT/1UezrJVsKw5zjg==",
+      "dev": true,
+      "requires": {
+        "http-parser-js": ">=0.5.1",
+        "safe-buffer": ">=5.1.0",
+        "websocket-extensions": ">=0.1.1"
+      }
+    },
+    "websocket-extensions": {
+      "version": "0.1.4",
+      "resolved": "https://registry.npmjs.org/websocket-extensions/-/websocket-extensions-0.1.4.tgz",
+      "integrity": "sha512-OqedPIGOfsDlo31UNwYbCFMSaO9m9G/0faIHj5/dZFDMFqPTcx6UwqyOy3COEaEOg/9VsGIpdqn62W5KhoKSpg==",
       "dev": true
     },
+    "which": {
+      "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",
       "resolved": "https://registry.npmjs.org/window-size/-/window-size-0.1.0.tgz",
diff --git a/package.json b/package.json
index c0ac143..363b675 100644
--- a/package.json
+++ b/package.json
@@ -14,11 +14,11 @@
   ],
   "devDependencies": {
     "grunt-cli": "~1.3.2",
-    "grunt": "~0.4.2",
+    "grunt": "~1.5.3",
     "grunt-contrib-concat": "~0.1",
     "grunt-contrib-jasmine": "~1.0.3",
-    "grunt-contrib-jshint": "~0.7",
-    "grunt-contrib-watch": "~0.2",
+    "grunt-contrib-jshint": "~3.2",
+    "grunt-contrib-watch": "~1.1",
     "grunt-exec": "~0.4",
     "grunt-template-jasmine-istanbul": "~0.4.0",
     "hoek": "~> 5.0.3"