diff --git a/__mocks__/resize-observer-polyfill.js b/__mocks__/resize-observer-polyfill.js
new file mode 100644
index 0000000..f0b7be8
--- /dev/null
+++ b/__mocks__/resize-observer-polyfill.js
@@ -0,0 +1,12 @@
+class ResizeObserver {
+    observe() {
+        // do nothing
+    }
+    unobserve() {
+        // do nothing
+    }
+}
+
+window.ResizeObserver = ResizeObserver;
+
+export default ResizeObserver;
diff --git a/test-utils.js b/test-utils.js
index 9dbc897..841e8e6 100644
--- a/test-utils.js
+++ b/test-utils.js
@@ -1,6 +1,9 @@
 import React from 'react'
 import { render } from '@testing-library/react';
-import { Fade, Zoom, Slide } from './src/lib';
+import 'resize-observer-polyfill';
+import { Fade, Zoom, Slide } from './src';
+
+jest.mock('resize-observer-polyfill');
 
 export const images = [
   'images/slide_5.jpg',