diff --git a/setup.cfg b/setup.cfg
index 9994cb1f4..9e4ecb5c9 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -82,6 +82,7 @@ packages=find:
 [options.extras_require]
 dev=py-make>=0.1.0; twine; wheel
 telegram=requests
+notebook=ipywidgets>=6
 [options.entry_points]
 console_scripts=
     tqdm=tqdm.cli:main
diff --git a/tqdm/notebook.py b/tqdm/notebook.py
index 1e1431d89..2d73ea825 100644
--- a/tqdm/notebook.py
+++ b/tqdm/notebook.py
@@ -22,14 +22,9 @@
 if True:  # pragma: no cover
     # import IPython/Jupyter base widget and display utilities
     IPY = 0
-    IPYW = 0
     try:  # IPython 4.x
         import ipywidgets
         IPY = 4
-        try:
-            IPYW = int(ipywidgets.__version__.split('.')[0])
-        except AttributeError:  # __version__ may not exist in old versions
-            pass
     except ImportError:  # IPython 3.x / 2.x
         IPY = 32
         import warnings
@@ -37,7 +32,7 @@
             warnings.filterwarnings(
                 'ignore', message=".*The `IPython.html` package has been deprecated.*")
             try:
-                import IPython.html.widgets as ipywidgets
+                import IPython.html.widgets as ipywidgets  # NOQA: F401
             except ImportError:
                 pass