diff --git a/gems/bundled_gems b/gems/bundled_gems
index c01aa10cca..8a8d0dee17 100644
--- a/gems/bundled_gems
+++ b/gems/bundled_gems
@@ -39,7 +39,7 @@ ostruct             0.6.1   https://github.com/ruby/ostruct
 pstore              0.2.0   https://github.com/ruby/pstore
 benchmark           0.4.0   https://github.com/ruby/benchmark
 logger              1.6.6   https://github.com/ruby/logger
-rdoc                6.12.0  https://github.com/ruby/rdoc
+rdoc                6.13.1  https://github.com/ruby/rdoc
 win32ole            1.9.1   https://github.com/ruby/win32ole
 irb                 1.15.1  https://github.com/ruby/irb 6bb53630c3398b2042fb99d5232c68399491d338
 reline              0.6.0   https://github.com/ruby/reline defcd36c0b6e6648333d4b9ab5923eb4e543615e