diff --git a/hello-rails/Gemfile.lock b/hello-rails/Gemfile.lock
index c341a11..1bc2551 100644
--- a/hello-rails/Gemfile.lock
+++ b/hello-rails/Gemfile.lock
@@ -89,7 +89,7 @@ GEM
       mini_portile2 (~> 2.4.0)
     public_suffix (4.0.1)
     puma (3.12.1)
-    rack (2.0.7)
+    rack (2.0.8)
     rack-test (1.1.0)
       rack (>= 1.0, < 3)
     rails (5.1.7)