Prepare for 3.1.0 release
diff --git a/readme.rst b/readme.rst
index 526950e..7a37632 100644
--- a/readme.rst
+++ b/readme.rst
@@ -29,7 +29,7 @@
 Server Requirements
 *******************
 
-PHP version 5.4 or newer is recommended.
+PHP version 5.6 or newer is recommended.
 
 It should work on 5.2.4 as well, but we strongly advise you NOT to run
 such old versions of PHP, because of potential security and performance
@@ -67,4 +67,4 @@
 ***************
 
 The CodeIgniter team would like to thank EllisLab, all the
-contributors to the CodeIgniter project and you, the CodeIgniter user.
\ No newline at end of file
+contributors to the CodeIgniter project and you, the CodeIgniter user.