diff --git a/README.md b/README.md
index 2105c0b..0464322 100644
--- a/README.md
+++ b/README.md
@@ -4,6 +4,7 @@
 
 To obtain AmberTools, go to [the Amber webpage](http://ambermd.org).
 
+This version has been updated to match AmberTools 15 as of 23 Jun 2015.
 
 ### To install
 ```