diff --git a/gems/bundled_gems b/gems/bundled_gems
index e8aaacac71..c6a4c77d14 100644
--- a/gems/bundled_gems
+++ b/gems/bundled_gems
@@ -2,7 +2,7 @@
 minitest 5.14.4 https://github.com/seattlerb/minitest
 power_assert 2.0.1 https://github.com/ruby/power_assert
 rake 13.0.6 https://github.com/ruby/rake
-test-unit 3.4.6 https://github.com/test-unit/test-unit 3.4.6
+test-unit 3.4.7 https://github.com/test-unit/test-unit 3.4.7
 rexml 3.2.5 https://github.com/ruby/rexml
 rss 0.2.9 https://github.com/ruby/rss 0.2.9
 net-ftp 0.1.3 https://github.com/ruby/net-ftp