diff --git a/Gemfile.lock b/Gemfile.lock
index b7404fc..c6f7814 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -172,7 +172,7 @@ GEM
       slop (~> 3.3.1)
     pry-rails (0.2.1)
       pry (>= 0.9.10)
-    rack (1.4.3)
+    rack (1.4.7)
     rack-cache (1.2)
       rack (>= 0.4)
     rack-livereload (0.3.6)