diff --git a/spec/Gemfile.lock b/spec/Gemfile.lock
index db67780..ccae6ed 100644
--- a/spec/Gemfile.lock
+++ b/spec/Gemfile.lock
@@ -30,7 +30,7 @@ GEM
       cliver (~> 0.3.1)
       websocket-driver (>= 0.2.0)
     public_suffix (4.0.3)
-    rack (2.1.1)
+    rack (2.2.2)
     rack-test (1.1.0)
       rack (>= 1.0, < 3)
     regexp_parser (1.6.0)