diff --git a/defaults/main.yml b/defaults/main.yml
index cb1fe651..b4faa840 100644
--- a/defaults/main.yml
+++ b/defaults/main.yml
@@ -28,7 +28,7 @@ horizon_package_state: "{{ package_state | default('latest') }}"
 
 # Set installation method.
 horizon_install_method: "{{ service_install_method | default('source') }}"
-horizon_venv_python_executable: "{{ openstack_venv_python_executable | default('python2') }}"
+horizon_venv_python_executable: "{{ openstack_venv_python_executable | default('python3') }}"
 
 horizon_upper_constraints_url: "{{ requirements_git_url | default('https://releases.openstack.org/constraints/upper/' ~ requirements_git_install_branch | default('master')) }}"