diff --git a/Gemfile.lock b/Gemfile.lock
index 1e84e45..7eb8df1 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -36,7 +36,7 @@ GEM
       stringex (~> 1.2.0)
     multi_json (1.13.1)
     multipart-post (2.0.0)
-    rack (1.6.10)
+    rack (1.6.13)
     raindrops (0.19.0)
     safe_yaml (1.0.4)
     sinatra (1.2.6)
diff --git a/vendor/cache/rack-1.6.10.gem b/vendor/cache/rack-1.6.10.gem
deleted file mode 100644
index 9e757c6..0000000
Binary files a/vendor/cache/rack-1.6.10.gem and /dev/null differ
diff --git a/vendor/cache/rack-1.6.13.gem b/vendor/cache/rack-1.6.13.gem
new file mode 100644
index 0000000..cea335c
Binary files /dev/null and b/vendor/cache/rack-1.6.13.gem differ