diff --git a/README.md b/README.md
index f9a0090e..c3f07ca2 100644
--- a/README.md
+++ b/README.md
@@ -217,7 +217,7 @@ windows:
 
 ## ERB
 
-Project files support ERB for reusability across environments. Eg:
+Project files support [ERB](https://en.wikipedia.org/wiki/ERuby#erb) for reusability across environments. Eg:
 
 ```
 root: <%= ENV["MY_CUSTOM_DIR"] %>