diff --git a/gems/bundled_gems b/gems/bundled_gems
index 8a1cf4106e..f32c45ed8d 100644
--- a/gems/bundled_gems
+++ b/gems/bundled_gems
@@ -29,7 +29,7 @@ observer        0.1.2   https://github.com/ruby/observer
 abbrev          0.1.2   https://github.com/ruby/abbrev
 resolv-replace  0.1.1   https://github.com/ruby/resolv-replace
 rinda           0.2.0   https://github.com/ruby/rinda
-drb             2.2.0   https://github.com/ruby/drb 29389313b6f0d1b215ba16cdc28062dbc44c3c50
+drb             2.2.1   https://github.com/ruby/drb
 nkf             0.2.0   https://github.com/ruby/nkf
 syslog          0.1.2   https://github.com/ruby/syslog
 csv             3.2.8   https://github.com/ruby/csv