diff --git a/package-lock.json b/package-lock.json
index bf214de..d3975f7 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -641,15 +641,15 @@
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+      "resolved": "https://registry.npmjs.org/graceful-fs/-/graceful-fs-4.2.3.tgz",
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-      "resolved": "https://registry.npmjs.org/grunt/-/grunt-1.0.4.tgz",
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+      "resolved": "https://registry.npmjs.org/grunt/-/grunt-1.1.0.tgz",
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@@ -663,9 +663,9 @@
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         "grunt-legacy-util": "~1.1.1",
         "iconv-lite": "~0.4.13",
-        "js-yaml": "~3.13.0",
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-        "mkdirp": "~0.5.1",
+        "mkdirp": "~1.0.3",
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         "rimraf": "~2.6.2"
@@ -683,6 +683,12 @@
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+          "resolved": "https://registry.npmjs.org/mkdirp/-/mkdirp-1.0.3.tgz",
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+        },
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           "resolved": "https://registry.npmjs.org/resolve/-/resolve-1.1.7.tgz",
@@ -779,9 +785,9 @@
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+      "resolved": "https://registry.npmjs.org/hosted-git-info/-/hosted-git-info-2.8.8.tgz",
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@@ -882,13 +888,10 @@
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-      "resolved": "https://registry.npmjs.org/is-finite/-/is-finite-1.0.2.tgz",
-      "integrity": "sha1-zGZ3aVYCvlUO8R6LSqYwU0K20Ko=",
-      "dev": true,
-      "requires": {
-        "number-is-nan": "^1.0.0"
-      }
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/is-finite/-/is-finite-1.1.0.tgz",
+      "integrity": "sha512-cdyMtqX/BOqqNBBiKlIVkytNHm49MtMlYyn1zxzvJKWmFMlGzm+ry5BBfYyeY9YmNKbRSo/o7OX9w9ale0wg3w==",
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@@ -1046,9 +1049,9 @@
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-      "resolved": "https://registry.npmjs.org/minimist/-/minimist-1.2.0.tgz",
-      "integrity": "sha1-o1AIsg9BOD7sH7kU9M1d95omQoQ=",
+      "version": "1.2.5",
+      "resolved": "https://registry.npmjs.org/minimist/-/minimist-1.2.5.tgz",
+      "integrity": "sha512-FM9nNUYrRBAELZQT3xeZQ7fmMOBg6nWNmJKTcgsJeaLstP/UODVpGsr5OhXhhXg6f+qtJ8uiZ+PUxkDWcgIXLw==",
       "dev": true
     },
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@@ -1148,12 +1151,6 @@
         "validate-npm-package-license": "^3.0.1"
       }
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-    "number-is-nan": {
-      "version": "1.0.1",
-      "resolved": "https://registry.npmjs.org/number-is-nan/-/number-is-nan-1.0.1.tgz",
-      "integrity": "sha1-CXtgK1NCKlIsGvuHkDGDNpQaAR0=",
-      "dev": true
-    },
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       "resolved": "https://registry.npmjs.org/object-assign/-/object-assign-4.1.1.tgz",
@@ -1340,9 +1337,9 @@
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-      "resolved": "https://registry.npmjs.org/resolve/-/resolve-1.11.1.tgz",
-      "integrity": "sha512-vIpgF6wfuJOZI7KKKSP+HmiKggadPQAdsp5HiC1mvqnfp0gF1vdwgBWZIdrVft9pgqoMFQN+R7BSWZiBxx+BBw==",
+      "version": "1.15.1",
+      "resolved": "https://registry.npmjs.org/resolve/-/resolve-1.15.1.tgz",
+      "integrity": "sha512-84oo6ZTtoTUpjgNEr5SJyzQhzL72gaRodsSfyxC/AXRvwu0Yse9H8eF9IpGo7b8YetZhlI6v7ZQ6bKBFV/6S7w==",
       "dev": true,
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@@ -1486,9 +1483,9 @@
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-      "version": "3.0.4",
-      "resolved": "https://registry.npmjs.org/spdx-license-ids/-/spdx-license-ids-3.0.4.tgz",
-      "integrity": "sha512-7j8LYJLeY/Yb6ACbQ7F76qy5jHkp0U6jgBfJsk97bwWlVUnUWsAgpyaCvo17h0/RQGnQ036tVDomiwoI4pDkQA==",
+      "version": "3.0.5",
+      "resolved": "https://registry.npmjs.org/spdx-license-ids/-/spdx-license-ids-3.0.5.tgz",
+      "integrity": "sha512-J+FWzZoynJEXGphVIS+XEh3kFSjZX/1i9gFBaWQcB+/tmpe2qUsSBABpcxqxnAxFdiUFEgAX1bjYGQvIZmoz9Q==",
       "dev": true
     },
     "sprintf-js": {
diff --git a/package.json b/package.json
index 4d42ce3..59ff05f 100644
--- a/package.json
+++ b/package.json
@@ -5,7 +5,7 @@
 	},
 	"devDependencies": {
 		"eslint-config-wikimedia": "0.15.0",
-		"grunt": "1.0.4",
+		"grunt": "1.1.0",
 		"grunt-banana-checker": "0.8.1",
 		"grunt-eslint": "22.0.0",
 		"grunt-jsonlint": "1.1.0"