diff --git a/Gemfile.lock b/Gemfile.lock
index 5fa3e45..1e56d39 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -44,7 +44,7 @@ GEM
     public_suffix (6.0.1)
     racc (1.8.1)
     rack (3.1.8)
-    rack-test (2.1.0)
+    rack-test (2.2.0)
       rack (>= 1.3)
     rainbow (3.1.1)
     rake (13.2.1)