diff --git a/config/initializers/metrics.rb b/config/initializers/metrics.rb
new file mode 100644
index 0000000..0bbab78
--- /dev/null
+++ b/config/initializers/metrics.rb
@@ -0,0 +1,7 @@
+unless Rails.env.test?
+  require 'prometheus_exporter/instrumentation'
+  require 'prometheus_exporter/middleware'
+
+  PrometheusExporter::Instrumentation::Process.start(type: 'master')
+  Rails.application.middleware.unshift PrometheusExporter::Middleware
+end