# Odin Compiler upgrade

**URL:** <https://forum.codecrafters.io/t/odin-compiler-upgrade/13396>\
**Category:** Bug Reports\
**Created:** [July 12, 2025, 8:19am UTC](https://forum.codecrafters.io/t/odin-compiler-upgrade/13396 "2025-07-12T08:19:34Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![SerdaOzun](https://yyz1.discourse-cdn.com/flex003/user_avatar/forum.codecrafters.io/serdaozun/32/14195_2.png) [@SerdaOzun](https://forum.codecrafters.io/u/SerdaOzun)\
**Post date:** [July 12, 2025, 8:19am UTC](https://forum.codecrafters.io/t/odin-compiler-upgrade/13396/1 "2025-07-12T08:19:34Z")

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When implementing redis I noticed that my program wasn’t working on codecrafters.

I later came across this bug, which is the likely culprit (only solved a few weeks ago) [Odin join does not wait for thread to start before joining. · Issue #3924 · odin-lang/Odin · GitHub](https://github.com/odin-lang/Odin/issues/3924). Please upgrade the odin compiler used.

Thanks!

Edit: I tried last month’s Odin release and indeed it stops working locally on my machine as well. Took me too long to realise, that it is an Odin bug

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**Author:** ![andy1li](https://yyz1.discourse-cdn.com/flex003/user_avatar/forum.codecrafters.io/andy1li/32/10_2.png) [@andy1li](https://forum.codecrafters.io/u/andy1li)\
**Post date:** [July 12, 2025, 8:53pm UTC](https://forum.codecrafters.io/t/odin-compiler-upgrade/13396/4 "2025-07-12T20:53:57Z")

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Hey @SerdaOzun, thanks for highlighting the issue!

Would you mind sharing which version is working for you locally?

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**Author:** ![SerdaOzun](https://yyz1.discourse-cdn.com/flex003/user_avatar/forum.codecrafters.io/serdaozun/32/14195_2.png) [@SerdaOzun](https://forum.codecrafters.io/u/SerdaOzun)\
**Post date:** [July 13, 2025, 9:01am UTC](https://forum.codecrafters.io/t/odin-compiler-upgrade/13396/6 "2025-07-13T09:01:43Z")

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Hi @andy1li ,  
The latest tagged release [dev-2025-07](https://github.com/odin-lang/Odin/releases/tag/dev-2025-07) should work

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**Author:** ![andy1li](https://yyz1.discourse-cdn.com/flex003/user_avatar/forum.codecrafters.io/andy1li/32/10_2.png) [@andy1li](https://forum.codecrafters.io/u/andy1li)\
**Post date:** [July 14, 2025, 12:28am UTC](https://forum.codecrafters.io/t/odin-compiler-upgrade/13396/8 "2025-07-14T00:28:10Z")

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@SerdaOzun I’ve upgraded buildpack version for your repo to **dev-2025-07** and pushed a commit to your repo. You can run `git pull` to sync the changes.

Let me know if you’re still running into issues!

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**Author:** ![system](https://canada1.discourse-cdn.com/flex003/uploads/codecrafters/original/3X/7/0/700657133935c15703e22c7c8870394f6e6dc27d.svg) [@system](https://forum.codecrafters.io/u/system)\
**Post date:** [July 21, 2025, 10:16pm UTC](https://forum.codecrafters.io/t/odin-compiler-upgrade/13396/10 "2025-07-21T22:16:17Z")

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