diff --git a/config.ru b/config.ru
index c713f67..a9e519f 100644
--- a/config.ru
+++ b/config.ru
@@ -4,11 +4,13 @@
 
 require ::File.expand_path('config/environment', __dir__)
 
-require 'prometheus/middleware/collector'
-require 'prometheus/middleware/exporter'
+unless Rails.env.test?
+  require 'prometheus/middleware/collector'
+  require 'prometheus/middleware/exporter'
 
-use Prometheus::Middleware::Collector
-use Prometheus::Middleware::Exporter
+  use Prometheus::Middleware::Collector
+  use Prometheus::Middleware::Exporter
+end
 
 map Rails.application.config.relative_url_root || '/' do
   run Rails.application