diff --git a/Gemfile.lock b/Gemfile.lock
index 9bdc705..50f3d72 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -54,7 +54,7 @@ GEM
     nokogiri (1.8.4)
       mini_portile2 (~> 2.3.0)
     public_suffix (3.0.3)
-    rack (2.0.5)
+    rack (2.0.8)
     rack-protection (2.0.3)
       rack
     rack-test (0.6.3)