diff --git a/Gemfile b/Gemfile
index fc7f8d7415..14fbe4f698 100644
--- a/Gemfile
+++ b/Gemfile
@@ -34,5 +34,5 @@ end
 # `bundle config set --local without rdoc`
 # Then re-run `bundle install`.
 group :rdoc do
-  gem "rdoc", "6.9.0"
+  gem "rdoc", "6.10.0"
 end