diff --git a/Gemfile.lock b/Gemfile.lock
index 79718ea..5cab8d3 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -211,7 +211,7 @@ GEM
     pathutil (0.16.1)
       forwardable-extended (~> 2.6)
     public_suffix (2.0.5)
-    rack (1.6.9)
+    rack (1.6.13)
     rack-protection (1.5.5)
       rack
     rack-test (0.8.3)