public static function deactivated_plugin( $filename ) {
		$plugins = self::get_local_woo_plugins();

		// Not a local woo plugin.
		if ( empty( $plugins[ $filename ] ) ) {
			return;
		}

		// Make sure we have a connection.
		$auth = WC_Helper_Options::get( 'auth' );
		if ( empty( $auth ) ) {
			return;
		}

		$plugin        = $plugins[ $filename ];
		$product_id    = $plugin['_product_id'];
		$subscriptions = self::_get_subscriptions_from_product_id( $product_id, false );
		$site_id       = absint( $auth['site_id'] );

		// No valid subscriptions for this product.
		if ( empty( $subscriptions ) ) {
			return;
		}

		$deactivated = 0;

		foreach ( $subscriptions as $subscription ) {
			// Don't touch subscriptions that aren't activated on this site.
			if ( ! in_array( $site_id, $subscription['connections'], true ) ) {
				continue;
			}

			$product_key           = $subscription['product_key'];
			$deactivation_response = WC_Helper_API::post(
				'deactivate',
				array(
					'authenticated' => true,
					'body'          => wp_json_encode(
						array(
							'product_key' => $product_key,
						)
					),
				)
			);

			if ( wp_remote_retrieve_response_code( $deactivation_response ) === 200 ) {
				$deactivated++;

				/**
				 * Fires when the Helper activates a product successfully.
				 *
				 * @param int    $product_id Product ID being deactivated.
				 * @param string $product_key Subscription product key.
				 * @param array  $deactivation_response The response object from wp_safe_remote_request().
				 */
				do_action( 'woocommerce_helper_subscription_deactivate_success', $product_id, $product_key, $deactivation_response );
			} else {
				/**
				 * Fires when the Helper fails to activate a product.
				 *
				 * @param int    $product_id Product ID being deactivated.
				 * @param string $product_key Subscription product key.
				 * @param array  $deactivation_response The response object from wp_safe_remote_request().
				 */
				do_action( 'woocommerce_helper_subscription_deactivate_error', $product_id, $product_key, $deactivation_response );
			}
		}

		if ( $deactivated ) {
			self::log( sprintf( 'Auto-deactivated %d subscription(s) for %s', $deactivated, $filename ) );
			self::_flush_subscriptions_cache();
			self::_flush_updates_cache();
		}
	}