README.rst: note that only Python 3 is supported

1 files changed, 4 insertions, 0 deletions

diff --git a/README.rst b/README.rst
index 07e99fa..7a7b50a 100644
--- a/README.rst
+++ b/README.rst
@@ -5,6 +5,9 @@ Realistic Foregrounds Simulation for EoR 21cm Signal Detection
 This repository is at its very early stage and under heavy development,
 do *NOT* use at the moment!
 
+**NOTE:**
+Only Python 3 (>= 3.5) is supported!
+
 This repository provides the tools to simulate the currently *most realistic*
 (to our knowledge) low-frequency radio foregrounds, which can be further
 used to test various foreground removal or separation methods, for the
@@ -31,5 +34,6 @@ Unless otherwise declared:
 - Documentations and products generated by our are distributed under the `Creative Commons Attribution 3.0 license`_;
 - Third-party codes and products used are distributed under their own licenses.
 
+
 .. _`MIT license`: https://opensource.org/licenses/mit-license.php
 .. _`Creative Commons Attribution 3.0 license`: https://creativecommons.org/licenses/by/3.0/us/deed.en_US