diff --git a/main.tf b/main.tf
index f16e9c8..fe776fc 100644
--- a/main.tf
+++ b/main.tf
@@ -75,6 +75,7 @@ resource "aws_instance" "default" {
   root_block_device {
     encrypted   = var.root_block_device_encrypted
     volume_size = var.root_block_device_volume_size
+    volume_type = var.root_block_device_volume_type
   }
 
   # Optional block; skipped if var.ebs_block_device_volume_size is zero