diff --git a/config/infra-prod/nextflow-efs-file-system.yaml b/config/infra-prod/nextflow-efs-file-system.yaml
index a752e24d..752b27bf 100644
--- a/config/infra-prod/nextflow-efs-file-system.yaml
+++ b/config/infra-prod/nextflow-efs-file-system.yaml
@@ -13,7 +13,7 @@ parameters:
   EcsSecurityGroupId: !stack_output_external nextflow-ecs-security-group::SecurityGroupId
   NextflowTowerConfigBucketArn: !stack_output_external nextflow-tower-config::BucketArn
   ThroughputMode: provisioned
-  ProvisionedThroughputInMibps: 1024
+  ProvisionedThroughputInMibps: "1024"
 
 stack_tags:
   {{stack_group_config.default_stack_tags}}