diff --git a/setup.py b/setup.py
index f6728e02..66936b8f 100644
--- a/setup.py
+++ b/setup.py
@@ -19,6 +19,13 @@ def read(*rnames):
     'zope.testing',
     ]
 
+docs_require = [
+    'Sphinx',
+    'collective.recipe.sphinxbuilder',
+    'docutils',
+    'roman',
+    ]
+
 setup(
     name='grok',
     version='1.4dev',
@@ -88,5 +95,6 @@ def read(*rnames):
         'zope.traversing',
         ],
     tests_require=tests_require,
-    extras_require={'test': tests_require},
+    extras_require={'test': tests_require,
+                    'docs': docs_require},
 )