diff --git a/ChangeLog b/ChangeLog
index 84e3283712..7f974e4828 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Wed Jan 04 17:55:53 2012  Ayumu AIZAWA  <ayumu.aizawa@gmail.com>
+
+	* array.c (rb_ary_sample): add example for Array#sample
+	  based on patch from https://github.com/ruby/ruby/pull/74
+
 Wed Jan  4 14:24:33 2012  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 
 	* string.c (str_nth_len): count ascii-only run at the end.  this
diff --git a/array.c b/array.c
index 01cabc87b9..c0ebf66442 100644
--- a/array.c
+++ b/array.c
@@ -3953,6 +3953,10 @@ rb_ary_shuffle(int argc, VALUE *argv, VALUE ary)
  *  <code>nil</code> and the second form returns an empty array.
  *
  *  If +rng+ is given, it will be used as the random number generator.
+ *
+ *     a = [ 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 ]
+ *     a.sample         #=> [7]
+ *     a.sample(4)      #=> [6, 4, 2, 5]
  */