diff --git a/indexer/msk.tf b/indexer/msk.tf
index 7b87b5d0..da2a6ea9 100644
--- a/indexer/msk.tf
+++ b/indexer/msk.tf
@@ -28,7 +28,7 @@ resource "aws_msk_cluster" "main" {
     instance_type = var.msk_instance_type
     storage_info {
       ebs_storage_info {
-        volume_size = 1000 # in GB
+        volume_size = var.environment == "mainnet" ? 2000 : 1000 # in GB
       }
     }
     client_subnets = [