diff --git a/Gemfile.lock b/Gemfile.lock
index 687425c..5afbee8 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -26,7 +26,7 @@ GEM
     nio4r (2.4.0)
     puma (4.0.1)
       nio4r (~> 2.0)
-    rack (2.0.7)
+    rack (2.2.3)
     rack-conneg (0.1.6)
       rack (>= 1.0)
     rack-protection (2.0.5)