diff --git a/Gemfile.lock b/Gemfile.lock
index 58624cb..a9f985c 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -56,7 +56,7 @@ GEM
       coderay (~> 1.1.0)
       method_source (~> 0.9.0)
     public_suffix (3.1.1)
-    rack (2.0.7)
+    rack (2.2.3)
     rack-protection (2.0.5)
       rack
     require_all (2.0.0)