diff --git a/Gemfile.lock b/Gemfile.lock
index 6aff958..beb3c02 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -83,7 +83,7 @@ GEM
       activesupport (>= 3.1)
     parallel (1.17.0)
     public_suffix (5.0.0)
-    rack (2.2.4)
+    rack (2.2.6.4)
     rake (13.0.1)
     rb-fsevent (0.10.3)
     rb-inotify (0.10.0)