diff --git a/core/etc/grs/world.conf b/core/etc/grs/world.conf
index d3acfb8..cf77010 100644
--- a/core/etc/grs/world.conf
+++ b/core/etc/grs/world.conf
@@ -3995,6 +3995,9 @@ package.use : dev-util/valgrind:0 -mpi
 [dev-util/wiggle:0]
 package.use : dev-util/wiggle:0 -test
 
+[dev-util/xxdiff:0]
+package.accept_keywords : >=dev-util/xxdiff-4.0_beta1_p20110426-r1 ~amd64
+
 [dev-vcs/cssc:0]
 package.use : dev-vcs/cssc:0 -test -valgrind