diff --git a/Gemfile.lock b/Gemfile.lock
index da9cf60..fe750c1 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -101,7 +101,7 @@ GEM
       forwardable-extended (~> 2.6)
     public_suffix (4.0.6)
     racc (1.6.0)
-    rack (2.2.4)
+    rack (2.2.8.1)
     rainbow (3.0.0)
     rb-fsevent (0.10.4)
     rb-inotify (0.10.1)