diff --git a/Gemfile.lock b/Gemfile.lock
index 03d187e..906b8d8 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -59,7 +59,7 @@ GEM
       method_source (~> 0.8)
       slop (~> 3.4)
     public_suffix (4.0.1)
-    rack (2.0.7)
+    rack (2.2.2)
     rainbow (2.2.2)
       rake
     rake (13.0.1)