diff --git a/local.yml b/local.yml
index d661577..8504804 100644
--- a/local.yml
+++ b/local.yml
@@ -34,6 +34,7 @@
     when: zsh_dir.stat.exists
 
   - name: install oh my zsh
+    become: true
     become_user: gianm
     when: not zsh_dir.stat.exists
     shell: sh -c "$(wget https://raw.github.com/ohmyzsh/ohmyzsh/master/tools/install.sh -O -)"