diff --git a/Gemfile.lock b/Gemfile.lock
index d4eb5b0..2cbf40f 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -101,7 +101,7 @@ GEM
       mini_portile (~> 0.6.0)
     orm_adapter (0.5.0)
     os (0.9.6)
-    rack (1.6.1)
+    rack (1.6.12)
     rack-test (0.6.3)
       rack (>= 1.0)
     rails (4.2.1)