diff --git a/static/c3-0.7.8/Gemfile.lock b/static/c3-0.7.8/Gemfile.lock
index 62df668..dbc1ffb 100644
--- a/static/c3-0.7.8/Gemfile.lock
+++ b/static/c3-0.7.8/Gemfile.lock
@@ -230,7 +230,7 @@ GEM
       mini_portile2 (~> 2.4.0)
     nokogiri (1.10.3-x86-mingw32)
       mini_portile2 (~> 2.4.0)
-    rack (1.6.11)
+    rack (1.6.12)
     rack-livereload (0.3.16)
       rack
     rack-test (0.6.3)