Build: Python 2.6 means pip >= 9, < 10

diff --git a/INSTALL.txt b/INSTALL.txt
index cb6dea5b39cd6037d36ff894d94a05daa371427a..8a87ed038f263065b7d113d243d215dc6d50ffa5 100644 (file)
--- a/INSTALL.txt
+++ b/INSTALL.txt
@@ -1,4 +1,4 @@
-m_lib requires Python 2.6, 2.7 or 3.4+.
+m_lib requires Python 2.6 (that means pip >= 9, < 10), 2.7 or 3.4+.
 
 Installation script setup.py requires setuptools.