diff --git a/Gemfile.lock b/Gemfile.lock
index 8f07c4a..2774768 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -38,7 +38,7 @@ GEM
     regexp_parser (2.6.0)
     reline (0.3.1)
       io-console (~> 0.5)
-    rexml (3.2.5)
+    rexml (3.3.9)
     rspec (3.12.0)
       rspec-core (~> 3.12.0)
       rspec-expectations (~> 3.12.0)