diff --git a/readme.txt b/readme.txt
index b86b4d10..46c5123f 100644
--- a/readme.txt
+++ b/readme.txt
@@ -34,5 +34,5 @@ _s includes support for Infinite Scroll in Jetpack.
 
 == Credits ==
 
-* Based on Underscores http://underscores.me/, (C) 2012-2015 Automattic, Inc., [GPL2](https://www.gnu.org/licenses/gpl-2.0.html)
-* normalize.css http://necolas.github.io/normalize.css/, (C) 2012-2015 Nicolas Gallagher and Jonathan Neal, [MIT](http://opensource.org/licenses/MIT)
\ No newline at end of file
+* Based on Underscores http://underscores.me/, (C) 2012-2015 Automattic, Inc., [GPLv2 or later](https://www.gnu.org/licenses/gpl-2.0.html)
+* normalize.css http://necolas.github.io/normalize.css/, (C) 2012-2015 Nicolas Gallagher and Jonathan Neal, [MIT](http://opensource.org/licenses/MIT)