diff --git a/setup.py b/setup.py
index 456010009..70d22335a 100644
--- a/setup.py
+++ b/setup.py
@@ -148,7 +148,8 @@ def include_documentation(local_dir, install_dir):
             'agilent-format>=0.4.5'
         ],
         extras_require={
-            'test': ['coverage']
+            'test': ['coverage'],
+            'doc': ['sphinx', 'recommonmark'],
         },
         entry_points=ENTRY_POINTS,
         keywords=KEYWORDS,