diff --git a/Gemfile.lock b/Gemfile.lock
index fe7521e..9c1f050 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -101,7 +101,7 @@ GEM
       byebug (~> 11.0)
       pry (~> 0.13.0)
     public_suffix (4.0.5)
-    rack (2.2.2)
+    rack (2.2.6.2)
     rake (10.5.0)
     rspec (3.9.0)
       rspec-core (~> 3.9.0)