diff --git a/README.md b/README.md
index 9d42cfc..a9927a2 100644
--- a/README.md
+++ b/README.md
@@ -4,7 +4,7 @@ A small background tool to remind the user of the "20-20-20" rule. Uses system n
 
 First, you might need these packages:
 ```
-sudo apt-get install python-gobject libnotify-bin python-gst-1.0
+sudo apt-get install python-gobject libnotify-bin python-gst-1.0 python-wxgtk3.0
 ```
 
 Second, just install the tool and required [Python modules](src/branch/master/setup.py) via: