diff --git a/Gemfile.lock b/Gemfile.lock
index 3bdb6e4..bbea33c 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -178,7 +178,7 @@ GEM
       slop (~> 3.4)
     psych (3.1.0)
     public_suffix (3.0.3)
-    rack (1.6.11)
+    rack (1.6.12)
     rack-protection (1.5.5)
       rack
     rack-test (1.1.0)