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---
stage: Create
group: Source Code
info: "To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#designated-technical-writers"
type: reference
---
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# Invalidate Markdown Cache
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For performance reasons, GitLab caches the HTML version of Markdown text
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(e.g. issue and merge request descriptions, comments). It's possible
that these cached versions become outdated, for example
when the `external_url` configuration option is changed - causing links
in the cached text to refer to the old URL.
To avoid this problem, the administrator can invalidate the existing cache by
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increasing the `local_markdown_version` setting in application settings. This can
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be done by [changing the application settings through
the API](../api/settings.md#change-application-settings):
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```shell
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curl --request PUT --header "PRIVATE-TOKEN: < your_access_token > " https://gitlab.example.com/api/v4/application/settings?local_markdown_version=< increased_number >
```
