diff --git a/README.md b/README.md
index a5e8ff4..2468352 100644
--- a/README.md
+++ b/README.md
@@ -2,6 +2,8 @@
 
 rga is a line-oriented search tool that allows you to look for a regex in a multitude of file types. rga wraps the awesome [ripgrep] and enables it to search in pdf, docx, sqlite, jpg, movie subtitles (mkv, mp4), etc.
 
+[ripgrep]: https://github.com/BurntSushi/ripgrep
+
 [![github repo](https://img.shields.io/badge/repo-github.com%2Fphiresky%2Fripgrep--all-informational.svg)](https://github.com/phiresky/ripgrep-all)
 [![Crates.io](https://img.shields.io/crates/v/ripgrep-all.svg)](https://crates.io/crates/ripgrep-all)
 [![fearless concurrency](https://img.shields.io/badge/concurrency-fearless-success.svg)](https://www.reddit.com/r/rustjerk/top/?sort=top&t=all)