diff --git a/serverless.yml b/serverless.yml
index 38d8da89..d2d8f50a 100644
--- a/serverless.yml
+++ b/serverless.yml
@@ -66,7 +66,7 @@ functions:
       - sqs:
           arn: arn:aws:sqs:${self:provider.region}:${aws:accountId}:model-engine-queue
           batchSize: 1
-          maximumConcurrency: 10  # Heavily restricts concurrency to avoid overwhelming the ldmbda limits
+          maximumConcurrency: 5  # Heavily restricts concurrency to avoid overwhelming the ldmbda limits
 
 
 resources: