diff --git a/README.md b/README.md
index 6099799..d51da81 100644
--- a/README.md
+++ b/README.md
@@ -62,6 +62,11 @@ Python's path.
 
 ![Usage Screenshot2](.sample_images/ed-screenshot2.png)
 
+- You can hit `Enter` on word meaning to copy it. The extension use
+  [pyperclip](https://github.com/asweigart/pyperclip) to provide platform independent
+  functionality to copy. So, if copy doesn't work, please checkout its documentation if
+  you would need to install any tool on your system.
+
 ## Changelog
 
 Unfortunately didn't maintain history before `v2.3.0`.