diff --git a/Gemfile.lock b/Gemfile.lock
index d17990e..8fefd8d 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -61,7 +61,7 @@ GEM
       coderay (~> 1.1.0)
       method_source (~> 0.9.0)
     public_suffix (4.0.3)
-    rack (2.0.8)
+    rack (2.2.3)
     rack-contrib (2.1.0)
       rack (~> 2.0)
     rack-protection (2.0.8.1)