diff --git a/README.md b/README.md
index 7f08e29..97b9572 100644
--- a/README.md
+++ b/README.md
@@ -5,7 +5,8 @@
 
 Interface statistics plugin for munin with [supersampling](http://guide.munin-monitoring.org/en/latest/plugin/supersampling.html) capability
 
-NOTE: This plugin created for FreeBSD and might not run on other OSes
+NOTE: This plugin builds on FreeBSD and Darwin, but not tested on other paltforms.
+NOTE: This program depends on [libpidutil](https://github.com/farrokhi/libpidutil)
 
 ## Installation
 1. Clone this repo and build using `make`