diff --git a/Gemfile.lock b/Gemfile.lock
index 6931bfa..45c99d3 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -13,7 +13,7 @@ GEM
     nio4r (2.5.7)
     puma (4.3.8)
       nio4r (~> 2.0)
-    rack (2.2.3)
+    rack (2.2.3.1)
     rack-protection (2.0.7)
       rack
     rbtree3 (0.6.0)