diff --git a/Gemfile.lock b/Gemfile.lock
index df7d3b1..b5341fd 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -25,7 +25,7 @@ GEM
     parallel (1.20.1)
     parser (3.0.0.0)
       ast (~> 2.4.1)
-    rack (2.0.9)
+    rack (2.2.3)
     rainbow (3.0.0)
     rake (13.0.3)
     redis (4.2.5)