# AWS CloudFormation Guard Document history
<a name="doc-history"></a>

The following table describes the documentation releases for AWS CloudFormation Guard.
+ **Latest documentation update**: July 30, 2025
+ **Latest version**: 3.1.2

| Change | Description | Date | 
| --- |--- |--- |
| [Documentation update](#doc-history) | Updated Guard CLI command reference documentation to align with current implementation. Version references updated to Guard 3.1.2. | July 30, 2025 | 
| [Version 3.0.0 release](#doc-history) | Version 3.0.0 introduces the following improvements:  Introduction and installation topics updated for release of Guard 3.0.0.   Added installation instructions for Homebrew and Chocolatey.   Information related to migrating Guard rules updated to reflect changes in Guard version 3.0.0.   Added a prominent link to the AWS CloudFormation Guard GitHub repository.   | June 30, 2023 | 
| [Version 2.1.3 release](#doc-history) | Version 2.1.3 introduces the following improvements:<br />Information on Guard 2.1.3 enhancements has been added. References to Guard 2.0 have been updated to Guard 2.1.3. | June 9, 2023 | 
| [Version 2.0.4 release](#doc-history) | Version 2.0.4 introduces the following improvements:<br />The `--payload` flag was added to the `validate` command.<br />For more information, see [validate](cfn-guard-validate.md) in the Guard CLI reference. | October 19, 2021 | 
| [Version 2.0.3 release](#doc-history) | Version 2.0.3 introduces the following improvements:  You can provide test names for each test in your unit testing file. For more information, see [Testing Guard rules](testing-rules.md).   The following options were added to the `validate` command:   `--output-format`   `--show-summary`   `--type`   <br />For more information, see [validate](cfn-guard-validate.md) in the Guard CLI reference.   | July 27, 2021 | 
| [Initial release](#doc-history) | Initial release of the AWS CloudFormation Guard User Guide. | July 15, 2021 |