diff --git a/README.md b/README.md
index 5c31fb7..aa90baa 100644
--- a/README.md
+++ b/README.md
@@ -4,6 +4,9 @@ pyenv-virtualenv is a [pyenv](https://github.com/yyuu/pyenv) plugin
 that provides an `pyenv virtualenv` command to create virtualenv for Python
 on UNIX-like systems.
 
+(NOTICE: If you are an existing user of [virtualenvwrapper](http://pypi.python.org/pypi/virtualenvwrapper)
+and loves it, [pyenv-virtualenvwrapper](https://github.com/yyuu/pyenv-virtualenvwrapper) may help you
+to manage your virtualenvs.)
 
 ## Installation