diff --git a/README.rst b/README.rst
index 0562521..137631d 100644
--- a/README.rst
+++ b/README.rst
@@ -25,8 +25,8 @@ You can run the checks locally with
 install it (you can
 follow the
 `Quickstart <https://qa.fedoraproject.org/docs/libtaskotron/latest/quickstart.html>`__).
-You'll also need the ``rpm`` and ``dnf`` Python 2 modules (``python2-rpm``,
-``python2-dnf``).
+You'll also need the ``rpm``, ``dnf`` and ``libarchive-c`` Python 2 modules
+(``python2-rpm``, ``python2-dnf``, ``python2-libarchive-c``).
 Note that Taskotron unfortunately runs on Python 2, but the code in
 this repository is Python 3 compatible as well.