--- a/README.md	Fri Mar 02 17:01:25 2018 +0100
+++ b/README.md	Mon Mar 12 14:10:19 2018 +0000
@@ -19,7 +19,7 @@
 * # Ubuntu/Debian :
 sudo apt-get install build-essential bison flex autoconf
 sudo apt-get install python-wxgtk3.0 pyro mercurial
-sudo apt-get install python-nevow python-matplotlib python-lxml python-zeroconf
+sudo apt-get install python-nevow python-matplotlib python-lxml python-zeroconf python-cycler
 ```
 * Prepare
 ```