diff --git a/example/Gemfile.lock b/example/Gemfile.lock
index 2e58bba..26fc94c 100644
--- a/example/Gemfile.lock
+++ b/example/Gemfile.lock
@@ -23,7 +23,7 @@ GEM
       coderay (~> 1.1.0)
       method_source (~> 0.9.0)
     racc (1.7.1)
-    rack (2.2.7)
+    rack (2.2.9)
     rackr (0.0.31)
       erubi (~> 1.12)
       rack (>= 2.0, < 4.0)