diff --git a/spec/support/rails_app/Gemfile.lock b/spec/support/rails_app/Gemfile.lock
index d522eaf..71c045a 100644
--- a/spec/support/rails_app/Gemfile.lock
+++ b/spec/support/rails_app/Gemfile.lock
@@ -58,7 +58,7 @@ GEM
     nio4r (2.1.0)
     nokogiri (1.8.0)
       mini_portile2 (~> 2.2.0)
-    rack (2.0.3)
+    rack (2.0.7)
     rack-test (0.6.3)
       rack (>= 1.0)
     rails (5.1.2)