diff --git a/CHANGES.rst b/CHANGES.rst
index c297f25..9322815 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -5,6 +5,7 @@ CHANGES
 
 in progress
 ===========
+- Fix setup documentation re. ``--extra-index-url``. Thanks, Richard!
 
 
 2016-09-30 0.8.0
diff --git a/doc/source/setup.rst b/doc/source/setup.rst
index 35ded88..52a246b 100644
--- a/doc/source/setup.rst
+++ b/doc/source/setup.rst
@@ -18,7 +18,7 @@ Stable release
 --------------
 Install most recent *BERadio* Python distribution::
 
-    pip install --index-url=https://packages.hiveeyes.org/hiveeyes/python/eggs/ beradio [--upgrade]
+    pip install --extra-index-url=https://packages.hiveeyes.org/hiveeyes/python/eggs/ beradio [--upgrade]
 
 .. note::
 
@@ -28,7 +28,7 @@ Specific release
 ----------------
 Install *BERadio* version 0.6.0::
 
-    pip install --index-url=https://packages.hiveeyes.org/hiveeyes/python/eggs/ beradio==0.6.0
+    pip install --extra-index-url=https://packages.hiveeyes.org/hiveeyes/python/eggs/ beradio==0.6.0
 
 .. tip::