diff --git a/website/source/docs/providers/aws/r/db_instance.html.markdown b/website/source/docs/providers/aws/r/db_instance.html.markdown
index 6c813d9b1..652d2158f 100644
--- a/website/source/docs/providers/aws/r/db_instance.html.markdown
+++ b/website/source/docs/providers/aws/r/db_instance.html.markdown
@@ -84,6 +84,7 @@ the final snapshot (if `final_snapshot_identifier` is specified). Default
     Only used for [DB Instances on the _EC2-Classic_ Platform](https://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/USER_VPC.html#USER_VPC.FindDefaultVPC).
 * `db_subnet_group_name` - (Optional) Name of DB subnet group. DB instance will be created in the VPC associated with the DB subnet group. If unspecified, will be created in the `default` VPC, or in EC2 Classic, if available.
 * `parameter_group_name` - (Optional) Name of the DB parameter group to associate.
+* `option_group_name` - (Optional) Name of the DB option group to associate.
 * `storage_encrypted` - (Optional) Specifies whether the DB instance is encrypted. The default is `false` if not specified.
 * `apply_immediately` - (Optional) Specifies whether any database modifications
      are applied immediately, or during the next maintenance window. Default is