diff --git a/rb/Gemfile.lock b/rb/Gemfile.lock
index da3275587867d..6654ed9d330b8 100644
--- a/rb/Gemfile.lock
+++ b/rb/Gemfile.lock
@@ -89,7 +89,7 @@ GEM
     regexp_parser (2.9.1)
     reline (0.5.7)
       io-console (~> 0.5)
-    rexml (3.2.6)
+    rexml (3.3.9)
     rspec (3.13.0)
       rspec-core (~> 3.13.0)
       rspec-expectations (~> 3.13.0)