diff --git a/Gemfile.lock b/Gemfile.lock
index 3382e51db..29f3fe8d1 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -114,7 +114,7 @@ GEM
     open4 (1.3.4)
     public_suffix (4.0.6)
     rchardet (1.8.0)
-    rexml (3.3.9)
+    rexml (3.4.2)
     ruby-macho (1.4.0)
     ruby2_keywords (0.0.4)
     sawyer (0.8.2)