diff --git a/README.html b/README.html
index 431ee09eb..2a265e9ac 100644
--- a/README.html
+++ b/README.html
@@ -29,6 +29,7 @@ Gajim is a GTK+ app that loves GNOME. You can do 'make' so you don't require gno
Optional Runtime Requirements
+- PyOpenSSL (python-pyopenssl package in Debian) for secure SSL/TLS. Python's default SSL is insecure, so this package is highly recommended!
- dnsutils (or whatever package provides the nslookup binary) for SRV support; if you don't know what that is, you don't need it
- gtkspell and aspell-LANG where lang is your locale eg. en, fr etc
- GnomePythonExtras 2.10 or above (aka gnome-python-desktop) so you can avoid compiling trayicon and gtkspell