diff --git a/lib/stopsOpacity.js b/lib/stopsOpacity.js
index c2c9851a..0a459481 100644
--- a/lib/stopsOpacity.js
+++ b/lib/stopsOpacity.js
@@ -1,3 +1,4 @@
+import _ from 'lodash';
 export default function (stops, opacity) {
     if (isNaN(opacity)) {
         opacity = 1;