diff --git a/Gemfile.lock b/Gemfile.lock
index 3faaa27e..4ede58bd 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -64,7 +64,7 @@ GEM
     open4 (1.3.4)
     public_suffix (4.0.7)
     rchardet (1.8.0)
-    rexml (3.2.5)
+    rexml (3.3.9)
     ruby2_keywords (0.0.5)
     sawyer (0.9.2)
       addressable (>= 2.3.5)