diff --git a/kayobe/kolla_ansible.py b/kayobe/kolla_ansible.py
index 1d23647c1..8b0028398 100644
--- a/kayobe/kolla_ansible.py
+++ b/kayobe/kolla_ansible.py
@@ -144,7 +144,7 @@ def build_args(parsed_args, command, inventory_filename, extra_vars=None,
         cmd += ["-" + "v" * verbose_level]
     if parsed_args.kolla_playbook:
         cmd += ["--playbook", parsed_args.kolla_playbook]
-    cmd += vault.build_args(parsed_args, "--key")
+    cmd += vault.build_args(parsed_args, "--vault-password-file")
     inventories = _get_inventory_paths(parsed_args, inventory_filename)
     for inventory in inventories:
         cmd += ["--inventory", inventory]
diff --git a/kayobe/tests/unit/test_kolla_ansible.py b/kayobe/tests/unit/test_kolla_ansible.py
index 054508219..23b2eccf8 100644
--- a/kayobe/tests/unit/test_kolla_ansible.py
+++ b/kayobe/tests/unit/test_kolla_ansible.py
@@ -111,7 +111,7 @@ class TestCase(unittest.TestCase):
             ".", "/path/to/cwd/venvs/kolla-ansible/bin/activate", "&&",
             "kolla-ansible", "command",
             "--playbook", "/path/to/playbook",
-            "--key", "/path/to/kayobe-vault-password-helper",
+            "--vault-password-file", "/path/to/kayobe-vault-password-helper",
             "--inventory", "/path/to/inventory",
             "--configdir", "/path/to/config",
             "--passwords", "/path/to/config/passwords.yml",
@@ -147,7 +147,7 @@ class TestCase(unittest.TestCase):
         expected_cmd = [
             ".", "/path/to/cwd/venvs/kolla-ansible/bin/activate", "&&",
             "kolla-ansible", "command",
-            "--key", "/path/to/vault/pw",
+            "--vault-password-file", "/path/to/vault/pw",
             "--inventory", "/etc/kolla/inventory/overcloud",
         ]
         expected_cmd = " ".join(expected_cmd)
@@ -175,7 +175,7 @@ class TestCase(unittest.TestCase):
         expected_cmd = [
             ".", "/path/to/cwd/venvs/kolla-ansible/bin/activate", "&&",
             "kolla-ansible", "command",
-            "--key", "/path/to/kayobe-vault-password-helper",
+            "--vault-password-file", "/path/to/kayobe-vault-password-helper",
             "--inventory", "/etc/kolla/inventory/overcloud",
         ]
         expected_cmd = " ".join(expected_cmd)