diff --git a/ChangeLog b/ChangeLog
index f25d0f7d74..0d8e90b8ab 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Tue Sep  8 23:17:36 2015  Yuki Nishijima  <mail@yukinishijima.net>
+
+	* gems/bundled_gems: Upgrade the did_you_mean gem to 1.0.0.beta2.
+
 Tue Sep  8 23:09:28 2015  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 
 	* io.c (rb_io_s_popen): do not wait the child process during being
diff --git a/gems/bundled_gems b/gems/bundled_gems
index 1ec0a3fe50..feb3201dd1 100644
--- a/gems/bundled_gems
+++ b/gems/bundled_gems
@@ -3,3 +3,4 @@ test-unit 3.1.3
 minitest 5.8.0
 rake 10.4.2
 net-telnet 0.1.1
+did_you_mean 1.0.0.beta2