diff --git a/apps/webapp/app/v3/services/createBackgroundWorker.server.ts b/apps/webapp/app/v3/services/createBackgroundWorker.server.ts
index 79a5e28784..9045075e13 100644
--- a/apps/webapp/app/v3/services/createBackgroundWorker.server.ts
+++ b/apps/webapp/app/v3/services/createBackgroundWorker.server.ts
@@ -173,7 +173,7 @@ export async function createBackgroundTasks(
         },
       });
 
-      if (taskQueue.concurrencyLimit) {
+      if (typeof taskQueue.concurrencyLimit === "number") {
         await marqs?.updateQueueConcurrencyLimits(
           environment,
           taskQueue.name,
diff --git a/references/v3-catalog/src/trigger/concurrency.ts b/references/v3-catalog/src/trigger/concurrency.ts
index 32ef2f4e82..d468029299 100644
--- a/references/v3-catalog/src/trigger/concurrency.ts
+++ b/references/v3-catalog/src/trigger/concurrency.ts
@@ -3,7 +3,7 @@ import { logger, task, wait } from "@trigger.dev/sdk/v3";
 export const oneAtATime = task({
   id: "on-at-a-time",
   queue: {
-    concurrencyLimit: 2,
+    concurrencyLimit: 1,
   },
   run: async (payload: { message: string }) => {
     logger.info("One at a time task payload", { payload });