diff --git a/app/static/c3-0.6.9/Gemfile.lock b/app/static/c3-0.6.9/Gemfile.lock
index 2fdd517..fe6c67a 100644
--- a/app/static/c3-0.6.9/Gemfile.lock
+++ b/app/static/c3-0.6.9/Gemfile.lock
@@ -226,7 +226,7 @@ GEM
     multi_json (1.12.1)
     nokogiri (1.7.2)
       mini_portile2 (~> 2.1.0)
-    rack (1.6.8)
+    rack (1.6.12)
     rack-livereload (0.3.16)
       rack
     rack-test (0.6.3)