diff --git a/README.md b/README.md
index e771beb..c14117c 100644
--- a/README.md
+++ b/README.md
@@ -158,10 +158,12 @@ $ bash bin/hardening.sh --apply --only 99.99
 
 ### Harbian-audit benchmark for Debian GNU/Linux 9 
 This document is a description of the additions to the sections not included in the [CIS reference documentation](https://github.com/hardenedlinux/harbian-audit/blob/master/docs/CIS_Debian_Linux_8_Benchmark_v1.0.0.pdf). Includes STIG reference documentation and additional checks recommended by the HardenedLinux community. 
+
 [harbian audit Debian Linux 9 Benchmark](https://github.com/hardenedlinux/harbian-audit/blob/master/docs/harbian_audit_Debian_9_Benchmark_v0.1.mkd)
 
 ### Manual Operation docs 
-[How to config grub2 password protection](https://github.com/hardenedlinux/harbian-audit/blob/master/docs/examples/manual-operation-docs/how_to_config_grub2_password_protection.mkd)
+[How to config grub2 password protection](https://github.com/hardenedlinux/harbian-audit/blob/master/docs/examples/manual-operation-docs/how_to_config_grub2_password_protection.mkd)  
+[How to persistent iptables rules with debian 9](https://github.com/hardenedlinux/harbian-audit/blob/master/docs/examples/manual-operation-docs/how_to_persistent_iptables_rules_with_debian_9.mkd)  
 
 ## harbian-audit License 
 GPL 3.0