diff --git a/Vagrantfile b/Vagrantfile
index 4a603c2ce..c1e05d215 100644
--- a/Vagrantfile
+++ b/Vagrantfile
@@ -7,7 +7,7 @@ VAGRANTFILE_API_VERSION = "2"
 # Setup instructions from docs/contributing.rst
 $ubuntu_setup_script = <<SETUP_SCRIPT
 cd /vagrant
-./letsencrypt-auto/letsencrypt-auto --os-packages-only
+./letsencrypt-auto-source/letsencrypt-auto --os-packages-only
 ./bootstrap/dev/venv.sh
 SETUP_SCRIPT