diff --git a/winpython/data/packages.ini b/winpython/data/packages.ini
index 012e69d4..4527d72b 100644
--- a/winpython/data/packages.ini
+++ b/winpython/data/packages.ini
@@ -127,6 +127,9 @@ description=ggplot for python
 url=https://github.com/yhat/ggplot
 category=plot
 
+[graphviz]
+description=Simple Python interface for Graphviz
+
 [greenlet]
 description=Lightweight in-process concurrent programming
 
@@ -393,6 +396,10 @@ description=Pygame gives multimedia to python.
 description=Generic syntax highlighter for general use in all kinds of software
 url=http://pygments.org
 
+[pygraphviz]
+description=Python interface to Graphviz graph drawing package
+https://github.com/pygraphviz/pygraphviz
+
 [pyhdf]
 description=Python interface to HDF4 files (Hierarchical Data Format version 4)
 url=http://pysclint.sourceforge.net/pyhdf