diff --git a/Gemfile.lock b/Gemfile.lock
index 2e0aee4..d79c2f7 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -17,7 +17,7 @@ GEM
     parser (2.7.0.2)
       ast (~> 2.4.0)
     public_suffix (4.0.3)
-    rack (2.1.2)
+    rack (2.2.6.3)
     rack-protection (2.0.8.1)
       rack
     rainbow (3.0.0)