diff --git a/docs/source/overview.rst b/docs/source/overview.rst
index 1dca94ac..c04277f6 100644
--- a/docs/source/overview.rst
+++ b/docs/source/overview.rst
@@ -26,6 +26,15 @@ packages.
 
 Vim version 7.3.661 or newer is recommended for performance reasons.
 
+Additional dependencies
+^^^^^^^^^^^^^^^^^^^^^^^
+
+The following Python packages are not required by all segments, but 
+recommended for optimal performance:
+
+* ``pygit2``
+* ``psutil``
+
 Installation
 ------------