diff --git a/Gemfile.lock b/Gemfile.lock
index b00befd..fe9b334 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -68,7 +68,7 @@ GEM
       ast (~> 2.4.1)
     public_suffix (5.0.0)
     racc (1.6.0)
-    rack (2.2.4)
+    rack (2.2.6.4)
     rack-test (0.8.3)
       rack (>= 1.0, < 3)
     rainbow (3.1.1)