diff --git a/README.md b/README.md
index c5aa8f0..59de0e4 100644
--- a/README.md
+++ b/README.md
@@ -9,6 +9,7 @@ Introducing DNS-py2: Electric Boogaloo
 - <a href="http://git.vps.int.local/benjamyn/whois">whois</a>
 - dnspython (sudo pip2 install dnspython)
 - ipwhois (sudo pip2 install ipwhois)
+- readline (sudo pip2 install readline) #linuxonly
 
 </body>
 </html>