diff --git a/ansible/README.md b/ansible/README.md
index 8dff4bbb3..03a32f55d 100644
--- a/ansible/README.md
+++ b/ansible/README.md
@@ -67,6 +67,7 @@ ssh-add private.key
 ```
 
 Subsequently, as long as the agent is running, you can use `source ~/.ssh/ssh.env` to load the keys to the current session.
+Note: On Mac OSX, you can add the `-K` option to ssh-add to store the passphrase in your keychain. The security of this feature is debated but it is convenient.
 
 ### Optional cloud dependencies