diff --git a/.stylelintrc b/.stylelintrc
index 81328b9..501742f 100644
--- a/.stylelintrc
+++ b/.stylelintrc
@@ -6,6 +6,7 @@
 			"background-size"
 		],
 		"selector-list-comma-newline-after": null,
-		"selector-no-id": null
+		"selector-no-id": null,
+		"value-keyword-case": null
 	}
 }
diff --git a/Gruntfile.js b/Gruntfile.js
index 20815d8..76c91f0 100644
--- a/Gruntfile.js
+++ b/Gruntfile.js
@@ -49,12 +49,13 @@ module.exports = function ( grunt ) {
 			all: [
 				'*.json',
 				'**/*.json',
+				'.stylelintrc',
 				'!node_modules/**'
 			]
 		}
 	} );
 
-	grunt.registerTask( 'lint', [ 'eslint', 'jsonlint', 'banana' ] );
+	grunt.registerTask( 'lint', [ 'eslint', 'jsonlint', 'banana', 'stylelint' ] );
 	grunt.registerTask( 'test', [ 'lint' ] );
 
 	grunt.registerTask( 'default', [ 'test' ] );
diff --git a/package.json b/package.json
index 7184a14..5ac9205 100644
--- a/package.json
+++ b/package.json
@@ -14,7 +14,7 @@
 		"grunt-eslint": "19.0.0",
 		"grunt-jsonlint": "^1.1.0",
 		"grunt-notify": "^0.4.5",
-		"grunt-stylelint": "^0.6.0",
-		"stylelint-config-wikimedia": "^0.3.0"
+		"grunt-stylelint": "0.7.0",
+		"stylelint-config-wikimedia": "0.4.1"
 	}
 }
diff --git a/resources/skins.minerva.base.styles/pageactions.less b/resources/skins.minerva.base.styles/pageactions.less
index 38d5c7e..bcbf124 100644
--- a/resources/skins.minerva.base.styles/pageactions.less
+++ b/resources/skins.minerva.base.styles/pageactions.less
@@ -90,7 +90,7 @@
 
 		button {
 			text-indent: inherit;
-			outline: none;
+			outline: 0;
 		}
 
 		&:first-child {
diff --git a/resources/skins.minerva.base.styles/ui.less b/resources/skins.minerva.base.styles/ui.less
index afed4e2..5338870 100644
--- a/resources/skins.minerva.base.styles/ui.less
+++ b/resources/skins.minerva.base.styles/ui.less
@@ -423,7 +423,7 @@ input.search {
 .overlay .panel,
 .page-list.side-list .list-thumb,
 .overlay .cleanup li .issue-notice,
-.editor-overlay .wikitext-editor
+.editor-overlay .wikitext-editor,
 .page-list li,
 .topic-title-list li,
 .site-link-list li,