diff --git a/Gemfile.lock b/Gemfile.lock
index 44a3cda..a273a0b 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -90,7 +90,7 @@ GEM
     parallel (1.21.0)
     parslet (2.0.0)
     public_suffix (4.0.6)
-    rack (2.2.3)
+    rack (2.2.6.4)
     rake (13.0.6)
     rb-fsevent (0.11.0)
     rb-inotify (0.10.1)