diff --git a/skin.json b/skin.json
index 535d257..83c6a90 100644
--- a/skin.json
+++ b/skin.json
@@ -84,6 +84,7 @@
 			"jquery.ui.tooltips": "skinStyles/jquery.ui/jquery.ui.tooltips.css",
 			"+mediawiki.notification": "skinStyles/mediawiki.notification.less",
 			"+mediawiki.sectionAnchor": "skinStyles/mediawiki.sectionAnchor.less",
+			"ooui": "skinStyles/ooui.less",
 			"mediawiki.special": "skinStyles/mediawiki.special.less",
 			"mediawiki.special.preferences": "skinStyles/mediawiki.special.preferences.less"
 		}
diff --git a/skinStyles/ooui.less b/skinStyles/ooui.less
new file mode 100644
index 0000000..e33c208
--- /dev/null
+++ b/skinStyles/ooui.less
@@ -0,0 +1,4 @@
+.oo-ui-windowManager-modal {
+	z-index: 101;
+	position: relative;
+}