diff --git a/spec/dummy/config/environments/test.rb b/spec/dummy/config/environments/test.rb
index 40c2d83805..acb102b502 100644
--- a/spec/dummy/config/environments/test.rb
+++ b/spec/dummy/config/environments/test.rb
@@ -33,7 +33,7 @@
   config.cache_store = :null_store
 
   # Raise exceptions instead of rendering exception templates.
-  config.action_dispatch.show_exceptions = ENV.fetch("RAILS_VERSION", "7.1") == "7.1" ? :none : false
+  config.action_dispatch.show_exceptions = Rails.gem_version >= Gem::Version.new("7.1") ? :none : false
 
   # Disable request forgery protection in test environment.
   config.action_controller.allow_forgery_protection = true