diff --git a/Gemfile.lock b/Gemfile.lock
index 21b2970f..fb9724c2 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -78,7 +78,7 @@ GEM
     power_assert (2.0.3)
     public_suffix (5.0.5)
     racc (1.7.3)
-    rack (3.0.11)
+    rack (3.1.8)
     rack-test (2.1.0)
       rack (>= 1.3)
     racksh (1.0.1)