PyPI · #1238 most downloaded on PyPI

locust

2.46.613M downloads/molocustio/locust ↗New releases in your daily digest, changelog included.

Developer-friendly load testing framework

Last release 2 days ago
26 Sep 2026
Ships on a steady schedule
a new release about every 2 weeks
Nearly every release is documented
notes for 60 of the last 60 stable releases
1 version withdrawn
withdrawn after publishing
6 years old
1041 releases · first in 2020

Release timeline

1041 releases since 2020

2020202120222023202420252026

20202026

One column per quarter.

Releases

2.35.1.dev2022 Apr 2025pre-release
Nothing published for this version
2.35.1.dev1122 Apr 2025pre-release
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2.35.1.dev521 Apr 2025pre-release
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2.35.1.dev321 Apr 2025pre-release
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2.35.1.dev216 Apr 2025pre-release

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2.35.016 Apr 2025

Web UI: Add optional base url for locust requests to an external API by @andrewbaldwin44 in https://github.com/locustio/locust/pull/3094

What's Changed

Web UI: Add optional base url for locust requests to an external API by @andrewbaldwin44 in https://github.com/locustio/locust/pull/3094
Webui: adding profile argument and display in html report by @schwannden in https://github.com/locustio/locust/pull/3093
Webui: Add history fallback by @andrewbaldwin44 in https://github.com/locustio/locust/pull/3095
Webui: Add credentials to stop and reset requests by @andrewbaldwin44 in https://github.com/locustio/locust/pull/3096
Bump vite from 6.2.5 to 6.2.6 in /locust/webui by @dependabot in https://github.com/locustio/locust/pull/3098

New Contributors

@schwannden made their first contribution in https://github.com/locustio/locust/pull/3093

Full Changelog: https://github.com/locustio/locust/compare/2.34.1...2.35.0

Open source →

Additional notes

Add profile argument and display in html report https://github.com/locustio/locust/pull/3093
Various UI fixes and dependency updates

Open source →

2.34.2.dev1315 Apr 2025pre-release

Nothing published for this version

2.34.2.dev1114 Apr 2025pre-release

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2.34.2.dev814 Apr 2025pre-release

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2.34.2.dev611 Apr 2025pre-release

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2.34.2.dev210 Apr 2025pre-release

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2.34.19 Apr 2025

Bump vite from 6.2.4 to 6.2.5 in /locust/webui by @dependabot in https://github.com/locustio/locust/pull/3091

What's Changed

Bump vite from 6.2.4 to 6.2.5 in /locust/webui by @dependabot in https://github.com/locustio/locust/pull/3091
Drop support for Python 3.9 by @cyberw in https://github.com/locustio/locust/pull/3090

Full Changelog: https://github.com/locustio/locust/compare/2.34.0...2.34.1

Open source →

Additional notes

Drop support for Python 3.9 https://github.com/locustio/locust/pull/3090

Open source →

2.34.1.dev78 Apr 2025pre-release

Nothing published for this version

2.34.1.dev38 Apr 2025pre-release

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2.34.1.dev16 Apr 2025pre-release

Nothing published for this version

2.34.06 Apr 2025

Add OpenAI User and example by @cyberw in https://github.com/locustio/locust/pull/3081

What's Changed

Add OpenAI User and example by @cyberw in https://github.com/locustio/locust/pull/3081
Make the Locust UI Responsive by @andrewbaldwin44 in https://github.com/locustio/locust/pull/3083
FastHttpUser: Dont crash if parameters are passed to failure() when someone forgot catch_response=True by @cyberw in https://github.com/locustio/locust/pull/3085
Bump vite from 6.2.1 to 6.2.4 in /locust/webui by @dependabot in https://github.com/locustio/locust/pull/3087
Web UI: Offset Graph Legend so There's no Overlap on Mobile / Narrow Screens by @andrewbaldwin44 in https://github.com/locustio/locust/pull/3086
Fix missing optional argument definitions in PostKwargs by @kairi003 in https://github.com/locustio/locust/pull/3088

New Contributors

@kairi003 made their first contribution in https://github.com/locustio/locust/pull/3088

Full Changelog: https://github.com/locustio/locust/compare/2.33.2...2.34.0

Open source →

Additional notes

Add experimental OpenAIUser and example https://github.com/locustio/locust/pull/3081
Make the Locust UI Responsive and work for smaller screens https://github.com/locustio/locust/pull/3083, https://github.com/locustio/locust/pull/3086
Tiny fixes & version bumps

Open source →

2.33.3.dev226 Apr 2025pre-release

Nothing published for this version

2.33.3.dev213 Apr 2025pre-release

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2.33.3.dev191 Apr 2025pre-release

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2.33.3.dev171 Apr 2025pre-release

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2.33.3.dev1528 Mar 2025pre-release

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2.33.3.dev1325 Mar 2025pre-release

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2.33.3.dev1020 Mar 2025pre-release

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2.33.3.dev920 Mar 2025pre-release

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2.33.3.dev420 Mar 2025pre-release

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2.33.3.dev320 Mar 2025pre-release

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2.33.3.dev217 Mar 2025pre-release

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2.33.3.dev115 Mar 2025pre-release

Nothing published for this version

2.33.215 Mar 2025

Update uv to 0.6.5 and optimize docker start time by @cyberw in https://github.com/locustio/locust/pull/3073

What's Changed

Update uv to 0.6.5 and optimize docker start time by @cyberw in https://github.com/locustio/locust/pull/3073
Webui: Bump Vite Version for Dependabot by @andrewbaldwin44 in https://github.com/locustio/locust/pull/3074
Optimize unit tests by @cyberw in https://github.com/locustio/locust/pull/3078
Update ruff to 0.10.0 by @cyberw in https://github.com/locustio/locust/pull/3079
Bump @babel/runtime from 7.22.15 to 7.26.10 in /locust/webui by @dependabot in https://github.com/locustio/locust/pull/3080

Full Changelog: https://github.com/locustio/locust/compare/2.33.1...2.33.2

Open source →

Additional notes

Optimize docker startup time https://github.com/locustio/locust/pull/3073
Various dependency updates

Open source →

2.33.2.dev1714 Mar 2025pre-release

Nothing published for this version

2.33.2.dev1514 Mar 2025pre-release

Nothing published for this version

2.33.2.dev914 Mar 2025pre-release

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2.33.2.dev610 Mar 2025pre-release

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2.33.2.dev49 Mar 2025pre-release

Nothing published for this version

2.33.18 Mar 2025

Fix html file naming crash, simplify code by @cyberw in https://github.com/locustio/locust/pull/3072

What's Changed

Fix html file naming crash, simplify code by @cyberw in https://github.com/locustio/locust/pull/3072

Full Changelog: https://github.com/locustio/locust/compare/2.33.0...2.33.1

Open source →

Additional notes

Fix html report file naming crash https://github.com/locustio/locust/pull/3072

Open source →

2.33.1.dev38 Mar 2025pre-release

Nothing published for this version

2.33.1.dev124 Feb 2025pre-release

Nothing published for this version

2.33.024 Feb 2025

Bump vitest from 2.1.6 to 2.1.9 in /locust/webui by @dependabot in https://github.com/locustio/locust/pull/3044

What's Changed

Bump vitest from 2.1.6 to 2.1.9 in /locust/webui by @dependabot in https://github.com/locustio/locust/pull/3044
Remove uv lock file from build artifacts by @mquinnfd in https://github.com/locustio/locust/pull/3055
FastHttpUser: Accept brotli and zstd compression encoding by @kamilbednarz in https://github.com/locustio/locust/pull/3048
Improve error message on missing user_count or spawn_rate in swarm payload by @cyberw in https://github.com/locustio/locust/pull/3052
Enable HTML Report Filename Parsing by @ktchani in https://github.com/locustio/locust/pull/3049
Update vite to 6.0.11 by @cyberw in https://github.com/locustio/locust/pull/3056
Use enter to automatically open web UI in default browser by @cyberw in https://github.com/locustio/locust/pull/3057
dos: correct venv activation path in docs by @n0h0 in https://github.com/locustio/locust/pull/3058
docs: update python-requests documentation links by @n0h0 in https://github.com/locustio/locust/pull/3059

New Contributors

@kamilbednarz made their first contribution in https://github.com/locustio/locust/pull/3048
@ktchani made their first contribution in https://github.com/locustio/locust/pull/3049
@n0h0 made their first contribution in https://github.com/locustio/locust/pull/3058

Full Changelog: https://github.com/locustio/locust/compare/2.32.10...2.33.0

Open source →

Additional notes

Press enter to automatically open web UI in browser https://github.com/locustio/locust/pull/3057
Enable HTML Report Filename Parsing https://github.com/locustio/locust/pull/3049
Various minor fixes and dependency updates

Open source →

2.32.11.dev2222 Feb 2025pre-release

Nothing published for this version

2.32.11.dev2022 Feb 2025pre-release

Nothing published for this version

2.32.11.dev1821 Feb 2025pre-release

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2.32.11.dev1721 Feb 2025pre-release

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2.32.11.dev1421 Feb 2025pre-release

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2.32.11.dev1321 Feb 2025pre-release

Nothing published for this version

2.32.11.dev1121 Feb 2025pre-release

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2.32.11.dev921 Feb 2025pre-release

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2.32.11.dev721 Feb 2025pre-release

Nothing published for this version

2.32.11.dev521 Feb 2025pre-release

Nothing published for this version

2.32.11.dev118 Feb 2025pre-release

Nothing published for this version

2.32.1018 Feb 2025

Use uv/hatch instead of Poetry by @mquinnfd in https://github.com/locustio/locust/pull/3039

What's Changed

Use uv/hatch instead of Poetry by @mquinnfd in https://github.com/locustio/locust/pull/3039
Add uv lock file to builds by @mquinnfd in https://github.com/locustio/locust/pull/3047

Full Changelog: https://github.com/locustio/locust/compare/2.32.9...2.32.10

Open source →

Additional notes

Use uv/hatch instead of Poetry https://github.com/locustio/locust/pull/3039

Open source →

2.32.10.dev617 Feb 2025pre-release

Nothing published for this version

2.32.10.dev217 Feb 2025pre-release

Nothing published for this version

2.32.10.dev117 Feb 2025pre-release

Nothing published for this version

2.32.910 Feb 2025

Fix issue where empty WebUI property is not parsed correctly by @timhovius in https://github.com/locustio/locust/pull/3012

What's Changed

Fix issue where empty WebUI property is not parsed correctly by @timhovius in https://github.com/locustio/locust/pull/3012
Update docs for stats.py file by @gabriel-check24 in https://github.com/locustio/locust/pull/3038
Add iter_lines Method to FastHttpSession Class by @MasterKey-Pro in https://github.com/locustio/locust/pull/3024

New Contributors

@timhovius made their first contribution in https://github.com/locustio/locust/pull/3012
@gabriel-check24 made their first contribution in https://github.com/locustio/locust/pull/3038
@MasterKey-Pro made their first contribution in https://github.com/locustio/locust/pull/3024

Full Changelog: https://github.com/locustio/locust/compare/2.32.8...2.32.9

Open source →

Additional notes

Fix issue where empty WebUI property is not parsed correctly https://github.com/locustio/locust/pull/3012
Add iter_lines method to FastHttpSession https://github.com/locustio/locust/pull/3024

Open source →

2.32.9.dev108 Feb 2025pre-release

Nothing published for this version

2.32.9.dev98 Feb 2025pre-release

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2.32.9.dev88 Feb 2025pre-release

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2.32.9.dev77 Feb 2025pre-release

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2.32.9.dev67 Feb 2025pre-release

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2.32.9.dev44 Feb 2025pre-release

Nothing published for this version

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