--- a/setup.py	Fri Nov 04 16:45:54 2016 +0100
+++ b/setup.py	Sun Nov 06 16:35:57 2016 +0100
@@ -228,7 +228,7 @@
         'Markdown',
         'unittest2 >= 0.7.0',
     ],
-    extra_requires={
+    extras_require={
         'captcha': [
             'Pillow',
         ],