diff --git a/Gemfile.lock b/Gemfile.lock
index 2a12423..a301216 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -27,7 +27,7 @@ GEM
       racc (~> 1.4)
     public_suffix (3.0.2)
     racc (1.5.2)
-    rack (2.2.3)
+    rack (2.2.6.4)
     rack-test (1.0.0)
       rack (>= 1.0, < 3)
     rubyzip (1.3.0)