diff --git a/Gemfile.lock b/Gemfile.lock
index f960e5e..bd91cf6 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -126,7 +126,7 @@ GEM
     puma (3.4.0)
     quiet_assets (1.1.0)
       railties (>= 3.1, < 5.0)
-    rack (1.6.4)
+    rack (1.6.13)
     rack-protection (1.5.3)
       rack
     rack-test (0.6.3)