diff --git a/ChangeLog b/ChangeLog
index 8509fe31e0..d671004a28 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Sat May 28 10:47:40 2016  SHIBATA Hiroshi  <hsbt@ruby-lang.org>
+
+	* gems/bundled_gems: Update latest releases, power_assert-0.3.0,
+	  test-unit 3.1.9, minitest 5.9.0, did_you_mean 1.0.1
+
 Sat May 28 10:45:40 2016  SHIBATA Hiroshi  <hsbt@ruby-lang.org>
 
 	* addr2line.c: drop to support ATARI ST platform. It was discontinued
diff --git a/gems/bundled_gems b/gems/bundled_gems
index 066e155c38..c7190138a7 100644
--- a/gems/bundled_gems
+++ b/gems/bundled_gems
@@ -1,7 +1,7 @@
-power_assert 0.2.7
-test-unit 3.1.8
-minitest 5.8.4
+power_assert 0.3.0
+test-unit 3.1.9
+minitest 5.9.0
 rake 11.1.2
 net-telnet 0.1.1
-did_you_mean 1.0.0
+did_you_mean 1.0.1
 xmlrpc 0.1.1