diff --git a/src/index.js b/src/index.js
index ec3914c..5c7bf6d 100644
--- a/src/index.js
+++ b/src/index.js
@@ -30,7 +30,7 @@ module.exports = class CssAnimationTimeline {
         staggerEach,
       });
     } else {
-      document.querySelectorAll(selector)
+      [...document.querySelectorAll(selector)]
           .forEach((el) => {
             this._keyframes.push({
               type: 'animate',