diff --git a/Gemfile.lock b/Gemfile.lock
index ec8faa3966..8c0e588904 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -76,7 +76,7 @@ GEM
       racc (~> 1.4)
     racc (1.8.1)
     rake (12.3.3)
-    rexml (3.3.9)
+    rexml (3.4.2)
     roo (2.7.1)
       nokogiri (~> 1)
       rubyzip (~> 1.1, < 2.0.0)