diff --git a/Gemfile.lock b/Gemfile.lock
index 092117d..622fb5c 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -88,7 +88,7 @@ GEM
     padrino-support (0.13.3.1)
       activesupport (>= 3.1)
     parallel (1.9.0)
-    rack (1.6.4)
+    rack (1.6.12)
     rb-fsevent (0.9.7)
     rb-inotify (0.9.7)
       ffi (>= 0.5.0)