diff --git a/README.md b/README.md
index dd8b0ea..69b668b 100644
--- a/README.md
+++ b/README.md
@@ -64,4 +64,4 @@ Uses: `grep`, `pcregrep`, `awk`, `sed`, `tr`, `sleep`, `badblocks`
 
 Tested with the static analysis tool at https://www.shellcheck.net to insure that the code is POSIX-compliant and free of issues.
 
-Written by Keith Nash, March 2017.                                                                         
+Written by Keith Nash, March 2017. Modified by Yifan Liao.