diff --git a/test/sample_apps/rails5_app/Gemfile.lock b/test/sample_apps/rails5_app/Gemfile.lock
index 8320c1e..8512bef 100644
--- a/test/sample_apps/rails5_app/Gemfile.lock
+++ b/test/sample_apps/rails5_app/Gemfile.lock
@@ -82,7 +82,7 @@ GEM
     nokogiri (1.9.1)
       mini_portile2 (~> 2.4.0)
     puma (3.12.0)
-    rack (2.0.6)
+    rack (2.2.8.1)
     rack-test (0.6.3)
       rack (>= 1.0)
     rails (5.0.7.1)