diff --git a/test_rails_server/Gemfile.lock b/test_rails_server/Gemfile.lock
index 872b9ab..c741428 100644
--- a/test_rails_server/Gemfile.lock
+++ b/test_rails_server/Gemfile.lock
@@ -68,7 +68,7 @@ GEM
     nokogiri (1.10.9)
       mini_portile2 (~> 2.4.0)
     puma (3.12.4)
-    rack (2.2.2)
+    rack (2.2.3)
     rack-test (1.1.0)
       rack (>= 1.0, < 3)
     rails (5.2.4.3)