diff --git a/cloud/scrapers/ketelhuis.ts b/cloud/scrapers/ketelhuis.ts
index aea52156..dea0ade3 100644
--- a/cloud/scrapers/ketelhuis.ts
+++ b/cloud/scrapers/ketelhuis.ts
@@ -28,7 +28,7 @@ const xray = Xray({
   },
 })
   .driver(xRayPuppeteer({ logger, waitForOptions: { timeout: 60000 } }))
-  .concurrency(10)
+  .concurrency(1)
   .throttle(10, 300)
 
 const extractFromMainPage = async () => {