readme has been renamed to readme_renderer
diff --git a/tox.ini b/tox.ini
index 63f1e4b..4c31bb6 100644
--- a/tox.ini
+++ b/tox.ini
@@ -26,7 +26,7 @@
 deps =
     doc8
     pyenchant
-    readme>=0.5.1
+    readme_renderer
     sphinx==1.3.1
     sphinx_rtd_theme
     sphinxcontrib-spelling