diff --git a/setup.py b/setup.py
index e0c54c0a..8d837759 100755
--- a/setup.py
+++ b/setup.py
@@ -279,7 +279,8 @@ setup_args = dict(
     extras_require={
         'ipython': ['ipython>=2.0'],
         's3': ['boto3>=1.2.4'],
-        'test': ['boto3>=1.2.4', 'packaging']})
+        'test': ['boto3>=1.2.4', 'packaging'],
+        'docs': ['ghp-import', 'numpydoc', 'sphinx', 'sphinx_rtd_theme']})
 
 if os.environ.get('PACKAGE_DATA'):
     setup_args['package_data'] = {'rasterio': ['gdal_data/*', 'proj_data/*']}