diff --git a/README.rst b/README.rst
index 444ab3c166a601a735a81e14e45631fbb4308518..943c0a09edb5c102cdf4edc2b1cbe0699a0700e3 100644
--- a/README.rst
+++ b/README.rst
@@ -94,6 +94,12 @@ https://apex.readthedocs.io/
 Development
 ===========
 
+Initial setup::
+
+    pip install -U pyenv tox
+    pyenv install 2.7 3.3.6 3.4.5 3.5.2 pypy-5.4.1
+    pyenv global 2.7 3.3.6 3.4.5 3.5.2 pypy-5.4.1
+
 To run the all tests run::
 
     tox