diff --git a/Gemfile.lock b/Gemfile.lock
index 1c5ed83..51f841b 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -344,7 +344,7 @@ GEM
     puma (3.11.2)
     quiet_assets (1.1.0)
       railties (>= 3.1, < 5.0)
-    rack (1.6.8)
+    rack (1.6.13)
     rack-pjax (1.0.0)
       nokogiri (~> 1.5)
       rack (>= 1.1)