diff --git a/Gemfile.lock b/Gemfile.lock
index 341522f..56ecac6 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -218,7 +218,7 @@ GEM
       nio4r (~> 2.0)
     raabro (1.4.0)
     racc (1.7.3)
-    rack (2.2.9)
+    rack (2.2.18)
     rack-cors (2.0.2)
       rack (>= 2.0.0)
     rack-test (2.1.0)