diff --git a/redoc.config.js b/redoc.config.js
index 0afc73e..db2db75 100644
--- a/redoc.config.js
+++ b/redoc.config.js
@@ -109,6 +109,11 @@ module.exports.specs = [
     routePath: '/api/metering',
     specUrl: 'https://docs.api.epilot.io/metering.yaml',
   },
+  {
+    layout: { title: 'Billing API' },
+    routePath: '/api/billing',
+    specUrl: 'https://docs.api.epilot.io/billing.yaml',
+  },
   {
     layout: { title: 'Email Template API' },
     routePath: '/api/email-template',