diff --git a/ChangeLog b/ChangeLog
index 38ad55ac72..fe78b38759 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Wed Jun  3 08:06:30 2015  NAKAMURA Usaku  <usa@ruby-lang.org>
+
+	* gem/bundled_gems: updated to test-unit 3.1.1 and minitest 5.7.0.
+
 Wed Jun  3 04:48:05 2015  Koichi Sasada  <ko1@atdot.net>
 
 	* vm_insnhelper.c (vm_defined): check respond_to_missing?
diff --git a/gems/bundled_gems b/gems/bundled_gems
index 98389e95c4..3e97251c77 100644
--- a/gems/bundled_gems
+++ b/gems/bundled_gems
@@ -1,5 +1,5 @@
 power_assert 0.2.3
-test-unit 3.0.9
-minitest 5.6.1
+test-unit 3.1.1
+minitest 5.7.0
 rake 10.4.2
 net-telnet 0.1.1