diff --git a/integration-tests/test_extensions.py b/integration-tests/test_extensions.py
index fa9d61f..f451a86 100644
--- a/integration-tests/test_extensions.py
+++ b/integration-tests/test_extensions.py
@@ -34,6 +34,8 @@ def test_nbextensions():
 
     extensions = [
         'nbresuse/main',
+        # This is what ipywidgets nbextension is called
+        'jupyter-js-widgets/extension'
     ]
 
     for e in extensions: