protected function upgrade_to_050() {
		if ( $this->options->installed_version ) {
			return;
		}

		$this->upgrade_cron();
		$this->upgrade_options();
		$this->upgrade_results();

		$this->delete_vulnerabilities();

		// Set installed version so upgrader does not run again.
		$this->options->get_store()->set( 'installed_version', '0.5.0' );
	}