diff --git a/docs/en_us/developers/requirements.txt b/docs/en_us/developers/requirements.txt
index b40c4db2df..b433346c9f 100644
--- a/docs/en_us/developers/requirements.txt
+++ b/docs/en_us/developers/requirements.txt
@@ -3,3 +3,4 @@ Django >=1.4,<1.5
 pytz
 -e git+https://github.com/edx/XBlock.git#egg=XBlock
 lxml
+sphinxcontrib-napoleon==0.2.6