diff --git a/package-lock.json b/package-lock.json
index 2572d5c5c3..f76bba55f4 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -2644,9 +2644,9 @@
 			"dev": true
 		},
 		"grunt": {
-			"version": "1.0.4",
-			"resolved": "https://registry.npmjs.org/grunt/-/grunt-1.0.4.tgz",
-			"integrity": "sha512-PYsMOrOC+MsdGEkFVwMaMyc6Ob7pKmq+deg1Sjr+vvMWp35sztfwKE7qoN51V+UEtHsyNuMcGdgMLFkBHvMxHQ==",
+			"version": "1.1.0",
+			"resolved": "https://registry.npmjs.org/grunt/-/grunt-1.1.0.tgz",
+			"integrity": "sha512-+NGod0grmviZ7Nzdi9am7vuRS/h76PcWDsV635mEXF0PEQMUV6Kb+OjTdsVxbi0PZmfQOjCMKb3w8CVZcqsn1g==",
 			"dev": true,
 			"requires": {
 				"coffeescript": "~1.10.0",
@@ -2660,9 +2660,9 @@
 				"grunt-legacy-log": "~2.0.0",
 				"grunt-legacy-util": "~1.1.1",
 				"iconv-lite": "~0.4.13",
-				"js-yaml": "~3.13.0",
+				"js-yaml": "~3.13.1",
 				"minimatch": "~3.0.2",
-				"mkdirp": "~0.5.1",
+				"mkdirp": "~1.0.3",
 				"nopt": "~3.0.6",
 				"path-is-absolute": "~1.0.0",
 				"rimraf": "~2.6.2"
@@ -2694,6 +2694,12 @@
 						"resolve": "~1.1.0"
 					}
 				},
+				"mkdirp": {
+					"version": "1.0.3",
+					"resolved": "https://registry.npmjs.org/mkdirp/-/mkdirp-1.0.3.tgz",
+					"integrity": "sha512-6uCP4Qc0sWsgMLy1EOqqS/3rjDHOEnsStVr/4vtAIK2Y5i2kA7lFFejYrpIyiN9w0pYf4ckeCYT9f1r1P9KX5g==",
+					"dev": true
+				},
 				"resolve": {
 					"version": "1.1.7",
 					"resolved": "https://registry.npmjs.org/resolve/-/resolve-1.1.7.tgz",
@@ -3502,9 +3508,9 @@
 			},
 			"dependencies": {
 				"minimist": {
-					"version": "1.2.0",
-					"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
 				}
 			}
@@ -3785,9 +3791,9 @@
 			},
 			"dependencies": {
 				"minimist": {
-					"version": "1.2.0",
-					"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
 				}
 			}
diff --git a/package.json b/package.json
index dfd5b41c79..755fd5b085 100644
--- a/package.json
+++ b/package.json
@@ -11,7 +11,7 @@
 	},
 	"devDependencies": {
 		"eslint-config-wikimedia": "0.15.0",
-		"grunt": "1.0.4",
+		"grunt": "1.1.0",
 		"grunt-banana-checker": "0.8.1",
 		"grunt-contrib-copy": "1.0.0",
 		"grunt-contrib-watch": "1.1.0",