diff --git a/README.in.rst b/README.in.rst
index d341198..1888fb7 100644
--- a/README.in.rst
+++ b/README.in.rst
@@ -16,6 +16,16 @@
 .. |---| unicode:: U+2014  .. em dash, trimming surrounding whitespace
    :trim:
 
+Requirements
+============
+ - `rbenv`_
+ - `rbenv.el`_
+ - `bundler`_
+
+ .. _rbenv: https://github.com/rbenv/rbenv
+ .. _rbenv.el: https://github.com/senny/rbenv.el
+ .. _bundler: https://bundler.io/
+
 Install
 =======
 As described in `Getting started`_, ensure melpa's whereabouts in ``init.el`` or ``.emacs``::
diff --git a/README.rst b/README.rst
index 5c0f4b0..abcfb39 100644
--- a/README.rst
+++ b/README.rst
@@ -1,6 +1,5 @@
 |build-status|
 
-A Gnus backend for Discourse.
 
 .. |build-status|
    image:: https://github.com/dickmao/nndiscourse/workflows/CI/badge.svg
@@ -16,6 +15,16 @@ A Gnus backend for Discourse.
 .. |---| unicode:: U+2014  .. em dash, trimming surrounding whitespace
    :trim:
 
+Requirements
+============
+ - `rbenv`_
+ - `rbenv.el`_
+ - `bundler`_
+
+ .. _rbenv: https://github.com/rbenv/rbenv
+ .. _rbenv.el: https://github.com/senny/rbenv.el
+ .. _bundler: https://bundler.io/
+
 Install
 =======
 As described in `Getting started`_, ensure melpa's whereabouts in ``init.el`` or ``.emacs``::