diff --git a/Gemfile.lock b/Gemfile.lock
index c957137..974b64d 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -118,7 +118,7 @@ GEM
       slop (~> 3.4)
     puma (2.11.2)
       rack (>= 1.1, < 2.0)
-    rack (1.6.0)
+    rack (1.6.1)
     rack-pjax (0.8.0)
       nokogiri (~> 1.5)
       rack (~> 1.1)