# Your github oauth token for github.com contains invalid characters

**URL:** <https://discuss.circleci.com/t/your-github-oauth-token-for-github-com-contains-invalid-characters/39798>\
**Category:** Build Environment\
**Tags:** github, composer, php\
**Created:** [April 15, 2021, 6:37pm UTC](https://discuss.circleci.com/t/your-github-oauth-token-for-github-com-contains-invalid-characters/39798 "2021-04-15T18:37:36Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![dschmidtadv](https://sea2.discourse-cdn.com/circleci/user_avatar/discuss.circleci.com/dschmidtadv/32/27182_2.png) [@dschmidtadv](https://discuss.circleci.com/u/dschmidtadv)\
**Post date:** [April 15, 2021, 6:37pm UTC](https://discuss.circleci.com/t/your-github-oauth-token-for-github-com-contains-invalid-characters/39798/1 "2021-04-15T18:37:37Z")

</div>

I am getting this error when I try to log into Github using composer:  
Your github oauth token for [github.com](http://github.com) contains invalid characters  
I

---

<div class="post-metadata">

**Author:** ![yannCI](https://sea2.discourse-cdn.com/circleci/user_avatar/discuss.circleci.com/yannci/32/24866_2.png) [@yannCI](https://discuss.circleci.com/u/yannCI)\
**Post date:** [April 18, 2021, 3:26pm UTC](https://discuss.circleci.com/t/your-github-oauth-token-for-github-com-contains-invalid-characters/39798/2 "2021-04-18T15:26:17Z")

</div>

Hi @dschmidtadv. Welcome to the CircleCI community 🙂

I believe this error is related to the [format change of GitHub authentication tokens](https://github.blog/changelog/2021-03-31-authentication-token-format-updates-are-generally-available/).

The [release `composer v2.0.12`](https://github.com/composer/composer/releases/tag/2.0.12) addresses this issue.

Please make sure to include the following step in your `config.yml`:

```auto
- run: sudo composer self-update

```

You can also find more information about building `php` projects with CircleCI in [our documentation](https://circleci.com/docs/2.0/language-php/).

---

<div class="post-metadata">

**Author:** ![system](https://global.discourse-cdn.com/circleci/original/3X/5/1/511608acda8e85906e15909b57bd0a46c1dbe291.png) [@system](https://discuss.circleci.com/u/system)\
**Post date:** [April 29, 2021, 5:22pm UTC](https://discuss.circleci.com/t/your-github-oauth-token-for-github-com-contains-invalid-characters/39798/3 "2021-04-29T17:22:32Z")

</div>

This topic was automatically closed 10 days after the last reply. New replies are no longer allowed.