diff --git a/Gemfile.lock b/Gemfile.lock
index 59f1974..6e5d3a5 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -126,7 +126,7 @@ GEM
       coderay (~> 1.1.0)
       method_source (~> 0.8.1)
       slop (~> 3.4)
-    rack (1.6.0)
+    rack (1.6.13)
     rack-livereload (0.3.15)
       rack
     rack-test (0.6.3)