diff --git a/Gemfile.lock b/Gemfile.lock
index f2927d5..34bdaad 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -34,7 +34,7 @@ GEM
       net-ssh (>= 2.6.5)
     net-ssh (3.2.0)
     power_assert (0.2.6)
-    rack (1.6.5)
+    rack (1.6.11)
     rack-protection (1.5.3)
       rack
     rack-test (0.6.3)