NashTech Insights

Upgrading Angular Versions

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Angular, the popular JavaScript framework for building dynamic web applications, has been continuously evolving with each new version release. As the Angular team introduces new features, enhancements, and bug fixes, it becomes essential for developers to keep their projects up to date by upgrading to the latest version. In this blog, we will explore the importance of upgrading Angular versions and provide a step-by-step guide to ensure a smooth and successful transition.

Why Upgrade Angular Versions?

1. Performance and Security Improvements

Each new Angular version comes with performance optimizations and security updates, ensuring your application stays fast, reliable, and secure.

2. Access to New Features

Upgrading allows you to take advantage of the latest Angular features and improvements, enabling you to build better user experiences.

3. Long-term Support (LTS)

Regularly upgrading to LTS versions guarantees that you receive long-term support and bug fixes for an extended period, making maintenance easier.

4. Community and Ecosystem

By staying up to date with Angular, you ensure compatibility with third-party libraries and tools, as well as access to an active and engaged developer community.

Now, let’s dive into the step-by-step process of upgrading Angular versions:

Step 1: Understanding Your Current Angular Version

Before starting the upgrade process, identify the version of Angular currently used in your project. This information will help you decide which upgrade path to follow. You can find the Angular version in the ‘package.json’ file of your project.

Step 2: Check Angular Update Guide

Angular provides a comprehensive Update Guide on its official website. Visit the Angular Update Guide and follow the instructions specific to your current version to determine the necessary steps for upgrading to the desired version. The guide will inform you of any breaking changes or deprecations between your current version and the target version.

Step 3: Update Dependencies

Update all Angular-related dependencies in your project’s ‘package.json’ file. This includes Angular core packages, Angular CLI, and other related libraries. Pay attention to the required versions mentioned in the Update Guide.

Step 4: Running Update Commands

Angular CLI simplifies the update process by providing update commands tailored to specific versions. Use the following commands:

ng update @angular/cli
ng update @angular/core

These commands will update the Angular CLI and core packages to their latest compatible versions.

Step 5: Fixing Deprecated APIs and Breaking Changes

The update process might introduce breaking changes or deprecate certain APIs used in your application. Review the update output for any warnings or errors and follow the provided guidance to fix them. Be prepared to refactor parts of your code to align with the new API changes.

Step 6: Running Tests

After making the necessary code changes, run your application’s unit tests and end-to-end tests. Ensure that all tests pass without any issues. This step ensures the application behaves correctly after the upgrade.

Step 7: Review and Optimize

Take this opportunity to review your codebase and optimize it further. Remove any obsolete code or dependencies that are no longer necessary with the new Angular version. This step helps keep your application lean and maintainable.


Upgrading Angular versions is crucial to ensure your web application remains performant, secure, and up to date-with the latest features and improvements. By following the step-by-step guide provided in this blog, you can smoothly transition your project to the latest Angular version and benefit from the vibrant Angular community and ecosystem.

Finally, for more such updates and to read more about such topics, please follow our LinkedIn page Frontend Competency



Aanchal Agarwal is a Software Consultant at NashTech. Her practice area is web development. She is recognized as a multi-talented, multitasker, and adaptive to the different work environments. Her hobbies include watching movies, listening to music, and traveling. She likes to read books and explore new things.

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