diff --git a/ansible/README.md b/ansible/README.md
index aeb571acf..e4de8be21 100644
--- a/ansible/README.md
+++ b/ansible/README.md
@@ -7,9 +7,9 @@
 
 1. Follow the [instructions to install the latest version of Ansible][ansible-install].
    * In most cases, using pip: `pip install ansible`.
-   * If you use brew, then `brew install python2 ansible`, and then run
-   `export PYTHONPATH=$(pip2 show pyyaml | grep Location | awk '{print $2}') `
-   before you use `ansible-playbook`.
+   * If you use brew, then `brew install python2 ansible; pip install yamlish`,
+     and then run `export PYTHONPATH=$(pip2 show pyyaml | grep Location | awk
+     '{print $2}') ` before you use `ansible-playbook`.
 2. Read this document.
 3. For SSH access, see the [SSH guide](../doc/ssh.md).