diff --git a/package.json b/package.json
index 369d09c0..a2a09601 100644
--- a/package.json
+++ b/package.json
@@ -9,7 +9,7 @@
     "grunt-banana-checker": "0.5.0",
     "grunt-eslint": "19.0.0",
     "grunt-jsonlint": "1.1.0",
-    "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/css/ext.uls.pt.less b/resources/css/ext.uls.pt.less
index 05982b19..f6734e03 100644
--- a/resources/css/ext.uls.pt.less
+++ b/resources/css/ext.uls.pt.less
@@ -26,11 +26,13 @@
 /* Opera for some inexplicable reason confuses right and left padding with */
 /* RTL text direction here (bug T47142). x:-o-prefocus won't match anything, */
 /* but will make other browsers ignore this rule. */
+/* stylelint-disable selector-type-no-unknown */
 x:-o-prefocus,
 body.rtl li#pt-uls {
 	/* @noflip */
 	direction: ltr;
 }
+/* stylelint-enable selector-type-no-unknown */
 
 /* Don't show it to users who disabled JS */
 .client-nojs #pt-uls {