Add extra requirements for docs (refs: #6336)

1 files changed, 3 insertions, 0 deletions

diff --git a/setup.py b/setup.py
index 30f8625c8..91b3e12cc 100644
--- a/setup.py
+++ b/setup.py
@@ -38,6 +38,9 @@ extras_require = {
     ':sys_platform=="win32"': [
         'colorama>=0.3.5',
     ],
+    'docs': [
+        'sphinxcontrib-websupport',
+    ],
     'test': [
         'pytest',
         'pytest-cov',