diff --git a/Gemfile.lock b/Gemfile.lock
index 0e49e3b..130a55a 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -99,7 +99,7 @@ GEM
       forwardable-extended (~> 2.6)
     public_suffix (3.0.2)
     racc (1.6.0)
-    rack (2.0.6)
+    rack (2.2.3.1)
     rb-fsevent (0.10.3)
     rb-inotify (0.9.10)
       ffi (>= 0.5.0, < 2)