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Crystal 1.19.1 is released!

We are announcing a new Crystal release 1.19.1 with two regressions fixed.

6 April 2026 at 06:56 pm
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Crystal 1.19.1 is released!

Crystal 1.19.1 is now available, addressing two critical regressions that were introduced in the previous version, 1.19.0. This minor update focuses on stability and ensuring the language functions as expected across various platforms, including Darwin, BSDs, and Windows.

The release of Crystal 1.19.1 follows the introduction of version 1.19.0, which brought several new features and improvements. However, two issues were discovered that affected the timer conversions from absolute to relative time, specifically related to the `sleep(seconds)` function. These regressions caused the function to trigger immediately instead of waiting on certain platforms. The Crystal team has promptly addressed these issues in the 1.19.1 release to maintain the integrity and reliability of the language.

For those unfamiliar with the changes introduced in version 1.19.0, the release notes provide a comprehensive overview. Users are encouraged to review these notes to understand the enhancements and updates that were added before the 1.19.1 patch. The official documentation on crystal-lang.org/install also offers detailed installation instructions for pre-built packages available on GitHub Releases and the official distribution channels.

This release includes two changes since 1.19.0, contributed by one developer. The Crystal team expresses gratitude to all contributors for their dedication in improving the language. Their efforts have been instrumental in ensuring the continuous development and refinement of Crystal.

The changelog for this patch release highlights the fixes made to address the regressions in timer conversions. For more detailed information, users can visit the full changelog. The team acknowledges the support of 84codes and all other sponsors, who have played a crucial role in maintaining and accelerating the development pace. To sustain this momentum, donations and sponsorships are essential. Users interested in supporting Crystal can do so through OpenCollective, or they can reach out directly to crystal@manas.tech for more information on sponsorship opportunities and other ways to contribute.

In conclusion, Crystal 1.19.1 represents a critical step in ensuring the stability and functionality of the language, particularly for users on Darwin, BSDs, and Windows platforms. The team's prompt response to addressing the regressions underscores their commitment to delivering a reliable and efficient programming experience. As always, the Crystal community welcomes contributions and support to further enhance the language and its ecosystem.

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