--- a/README.md	Fri Sep 22 18:06:15 2017 +0300
+++ b/README.md	Fri Sep 22 20:12:22 2017 +0300
@@ -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-numpy python-nevow python-matplotlib python-lxml
+sudo apt-get install python-nevow python-matplotlib python-lxml python-zeroconf
 ```
 * Prepare
 ```