diff --git a/Gemfile.lock b/Gemfile.lock
index 22c51eb..b8a0180 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -110,7 +110,7 @@ GEM
       method_source (~> 0.8.1)
       slop (~> 3.4)
     public_suffix (2.0.5)
-    rack (2.0.3)
+    rack (2.0.6)
     rack-livereload (0.3.16)
       rack
     rake (10.4.2)