diff --git a/gems/bundled_gems b/gems/bundled_gems
index eba107724d..8e1f30dd41 100644
--- a/gems/bundled_gems
+++ b/gems/bundled_gems
@@ -1,7 +1,7 @@
 did_you_mean 1.0.2
 minitest 5.9.1
 net-telnet 0.1.1
-power_assert 0.3.1
+power_assert 0.4.1
 rake 11.3.0
 test-unit 3.2.1
 xmlrpc 0.1.1