diff --git a/demos/jekyll-demo/Gemfile.lock b/demos/jekyll-demo/Gemfile.lock
index cbd4f1e..f9a1921 100644
--- a/demos/jekyll-demo/Gemfile.lock
+++ b/demos/jekyll-demo/Gemfile.lock
@@ -79,7 +79,7 @@ GEM
     rb-fsevent (0.11.1)
     rb-inotify (0.10.1)
       ffi (~> 1.0)
-    rexml (3.3.9)
+    rexml (3.4.2)
     rouge (3.28.0)
     safe_yaml (1.0.5)
     sassc (2.4.0)