diff --git a/makefile b/makefile
--- a/makefile
+++ b/makefile
@@ -13,6 +13,7 @@ binexec:
 	chmod a+x bin/*
 
 install_python_deps: link_to_sys_packages
+	env/bin/pip install twisted
 	env/bin/pip install -U -r pydeps
 
 DP=/usr/lib/python2.7/dist-packages