diff --git a/Gemfile.lock b/Gemfile.lock
index 77867bab6..e49600fec 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -100,7 +100,7 @@ GEM
       forwardable-extended (~> 2.6)
     public_suffix (6.0.1)
     racc (1.8.1)
-    rack (3.1.12)
+    rack (3.1.21)
     rb-fsevent (0.11.2)
     rb-inotify (0.11.1)
       ffi (~> 1.0)