diff --git a/INSTALL.swift b/INSTALL.swift
index 8e1635b0715426512503fd9dcde32f59a7ad1b62..90096bc1b88d34ab86c04f623f1d3f04ca5a2997 100644
--- a/INSTALL.swift
+++ b/INSTALL.swift
@@ -143,6 +143,8 @@ before you can build it.
  - DOXYGEN: the doxygen library is required to create the SWIFT API
             documentation.
 
+ - python:  Examples and solution script use python and rely on the
+   	    numpy library version 1.8.2 or higher.
 
 
                              SWIFT Coding style