diff --git a/ChangeLog b/ChangeLog
index 41c0086c5c..a41fb0794a 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Fri Oct 14 11:19:37 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* include/ruby/intern.h (rb_ary_reverse): export.
+
 Fri Oct 14 05:58:05 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 
 	* atomic.h (ATOMIC_INC, ATOMIC_DEC): return old values.
diff --git a/include/ruby/intern.h b/include/ruby/intern.h
index db595bb7fa..cd1fd04948 100644
--- a/include/ruby/intern.h
+++ b/include/ruby/intern.h
@@ -71,6 +71,7 @@ VALUE rb_ary_entry(VALUE, long);
 VALUE rb_ary_each(VALUE);
 VALUE rb_ary_join(VALUE, VALUE);
 VALUE rb_ary_reverse(VALUE);
+VALUE rb_ary_rotate(VALUE, long);
 VALUE rb_ary_sort(VALUE);
 VALUE rb_ary_sort_bang(VALUE);
 VALUE rb_ary_delete(VALUE, VALUE);