diff --git a/Gemfile.lock b/Gemfile.lock
index e7b3515..f64c22f 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -43,7 +43,7 @@ GEM
       coderay (~> 1.0.5)
       method_source (~> 0.8)
       slop (~> 3.4)
-    rack (1.5.2)
+    rack (2.0.8)
     rb-fsevent (0.9.3)
     rb-inotify (0.9.2)
       ffi (>= 0.5.0)