diff --git a/ChangeLog b/ChangeLog
index 23c288c9d9..dd97990699 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Mon Jan 12 23:21:57 2015  NAKAMURA Usaku  <usa@ruby-lang.org>
+
+	* gems/bundled_gems: update test-unit to 3.0.9.
+
 Mon Jan 12 18:35:44 2015  Eric Wong  <e@80x24.org>
 
 	* numeric.c (bit_coerce): use original value for error message
diff --git a/gems/bundled_gems b/gems/bundled_gems
index e57fc72f77..d987646227 100644
--- a/gems/bundled_gems
+++ b/gems/bundled_gems
@@ -1,3 +1,3 @@
 power_assert 0.2.2
-test-unit 3.0.8
+test-unit 3.0.9
 minitest 5.4.3