diff --git a/Gemfile.lock b/Gemfile.lock
index 53a268d..3500fd2 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -75,7 +75,7 @@ GEM
       coderay (~> 1.1)
       method_source (~> 1.0)
     public_suffix (4.0.4)
-    rack (2.2.3)
+    rack (3.0.4.1)
     rainbow (3.0.0)
     rake (13.0.1)
     rb-fsevent (0.10.3)