diff --git a/docs/install.html b/docs/install.html
index d010eed7e14..b6a75baeeb9 100644
--- a/docs/install.html
+++ b/docs/install.html
@@ -74,7 +74,9 @@ you think you've spotted a bug let developers know by filing a
 
 <ul>
 <li><a href="https://www.python.org/">Python</a> - Python is required.
-Version 2.7 or later should work.
+When building with scons 2.7 is required.
+When building with meson 3.5 or newer is required.
+When building with autotools 2.7, or 3.5 or later are required.
 </li>
 <li><a href="http://www.makotemplates.org/">Python Mako module</a> -
 Python Mako module is required. Version 0.8.0 or later should work.