diff --git a/examples/merchant-checkout/merchant-server/package.json b/examples/merchant-checkout/merchant-server/package.json
index 096977f..a5c51c7 100644
--- a/examples/merchant-checkout/merchant-server/package.json
+++ b/examples/merchant-checkout/merchant-server/package.json
@@ -11,6 +11,7 @@
     "@autopayprotocol/sdk": "^0.1.5",
     "@supabase/supabase-js": "^2.95.3",
     "dotenv": "^17.2.4",
-    "express": "^4.21.0"
+    "express": "^4.21.0",
+    "ws": "^8.18.3"
   }
 }
diff --git a/examples/merchant-checkout/merchant-server/server.js b/examples/merchant-checkout/merchant-server/server.js
index 1a4071e..70dc1c8 100644
--- a/examples/merchant-checkout/merchant-server/server.js
+++ b/examples/merchant-checkout/merchant-server/server.js
@@ -4,6 +4,7 @@ import { verifyWebhook } from '@autopayprotocol/sdk'
 import { fileURLToPath } from 'url'
 import { dirname, join } from 'path'
 import { createClient } from '@supabase/supabase-js'
+import ws from 'ws'
 
 const __dirname = dirname(fileURLToPath(import.meta.url))
 
@@ -30,7 +31,11 @@ const PLAN_IDS = process.env.PLAN_IDS ? process.env.PLAN_IDS.split(',').map(s =>
 // Supabase connection (same DB as relayer, merchant tables)
 const SUPABASE_URL = process.env.SUPABASE_URL || 'https://jlafnlrurqqalgvxshgz.supabase.co'
 const SUPABASE_KEY = process.env.SUPABASE_KEY || ''
-const supabase = SUPABASE_KEY ? createClient(SUPABASE_URL, SUPABASE_KEY) : null
+const supabase = SUPABASE_KEY ? createClient(SUPABASE_URL, SUPABASE_KEY, {
+  realtime: {
+    transport: ws,
+  },
+}) : null
 
 const app = express()