diff --git a/Gemfile.lock b/Gemfile.lock
index 5d4fa7b..6b93be8 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -126,7 +126,7 @@ GEM
       byebug (~> 11.0)
       pry (~> 0.10)
     racc (1.7.1)
-    rack (2.2.2)
+    rack (2.2.9)
     rack-test (1.1.0)
       rack (>= 1.0, < 3)
     rails-dom-testing (2.0.3)