$ composer outdated drupal/*
drupal/bootstrap 3.16.0 3.17.0 Built to use Bootstrap, a sleek, intuitive, and powerful front-end frame...

$ composer update drupal/bootstrap --with-dependencies
&g

Step1.

core: 8.x
type: theme
name: 'mytheme'
logo: 'images/logo.png'

*_ update all Drupal packages
anisur$ composer update --with-dependencies drupal/*

Loading composer repositories with package information
Updating dependencies (including require-dev)
Nothing t

anisur$ tree -L 1
.
├── INSTALL.txt
├── LICENSE.txt
├── README.txt
├── autoload.php
├── composer.json
├── composer.lock
├── core
├── example.gitignore
├── index.php
├── modules
├── profiles
├── 

anisur$ composer require drupal/bootstrap

Using version ^3.17 for drupal/bootstrap
./composer.json has been updated
> DrupalProject\composer\ScriptHandler::checkComposerVersion
Loading compo

anisur$ composer require drupal/pathauto

Using version ^1.3 for drupal/pathauto
./composer.json has been updated
> DrupalProject\composer\ScriptHandler::checkComposerVersion
Loading composer

Step 1. Backup both your files and database.

anisur$ composer self-update
Updating to version 1.8.0 (stable channel).
   Downloading (100%)         
Use composer self-update --rollback to return to version 1.4.1

anisur$ composer --version

Step 1. Backup both your files and database.