diff --git a/Doc/installing.rst b/Doc/installing.rst
index 90187a93..514cf99e 100644
--- a/Doc/installing.rst
+++ b/Doc/installing.rst
@@ -146,8 +146,12 @@ Debian
 Packages for building and testing::
 
    # apt-get install build-essential python3-dev python2.7-dev \
-       libldap2-dev libsasl2-dev slapd ldap-utils python-tox \
+       libldap2-dev libsasl2-dev slapd ldap-utils tox \
        lcov valgrind
+       
+.. note::
+   
+   On older releases ``tox`` was called ``python-tox``.
 
 Fedora
 ------