diff --git a/Gemfile.lock b/Gemfile.lock
index 2ef12e484..ae751655b 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -114,7 +114,7 @@ GEM
     rb-fsevent (0.11.2)
     rb-inotify (0.10.1)
       ffi (~> 1.0)
-    rexml (3.2.5)
+    rexml (3.3.9)
     rouge (4.0.0)
     ruby2_keywords (0.0.5)
     safe_yaml (1.0.5)