diff --git a/Gemfile.lock b/Gemfile.lock
index ea5af71a..ba6623e0 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -243,7 +243,7 @@ GEM
     padrino-support (0.12.9)
       activesupport (>= 3.1)
     parallel (1.12.1)
-    rack (1.6.10)
+    rack (1.6.13)
     rack-livereload (0.3.17)
       rack
     rack-test (0.6.3)