diff --git a/lib/processCss.js b/lib/processCss.js
index ac65af16..cb165e4a 100644
--- a/lib/processCss.js
+++ b/lib/processCss.js
@@ -186,7 +186,8 @@ module.exports = function processCss(inputSource, inputMap, options, callback) {
 				});
 			}
 		}),
-		parserPlugin(parserOptions)
+		parserPlugin(parserOptions),
+		...(query.postcssPlugins || [])
 	]);
 
 	if(minimize) {