diff --git a/Gemfile.lock b/Gemfile.lock
index 15da9e4..803be56 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -205,7 +205,7 @@ GEM
       pry (>= 0.10.4)
     public_suffix (3.0.0)
     puma (3.10.0)
-    rack (1.6.10)
+    rack (1.6.12)
     rack-pjax (1.0.0)
       nokogiri (~> 1.5)
       rack (>= 1.1)