# GHC 9.6.4 is now available

**URL:** <https://discourse.haskell.org/t/ghc-9-6-4-is-now-available/8502>\
**Category:** Announcements\
**Created:** [January 9, 2024, 9:56am UTC](https://discourse.haskell.org/t/ghc-9-6-4-is-now-available/8502 "2024-01-09T09:56:17Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![wz1000](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.haskell.org/wz1000/32/1245_2.png) [@wz1000](https://discourse.haskell.org/u/wz1000)\
**Post date:** [January 9, 2024, 9:56am UTC](https://discourse.haskell.org/t/ghc-9-6-4-is-now-available/8502/1 "2024-01-09T09:56:17Z")

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The GHC developers are happy to announce the availability of GHC 9.6.4. Binary  
distributions, source distributions, and documentation are available on the  
[release page](https://www.haskell.org/ghc/download_ghc_9_6_4.html).

This release is primarily a bugfix release addressing a few issues  
found in the 9.6 series. These include:

- A fix for a bug where certain warnings flags were not recognised (#24071)
- Fixes for a number of simplifier bugs (#23952, #23862).
- Fixes for compiler panics with certain package databases involving unusable  
units and module reexports (#21097, #16996, #11050).
- A fix for a typechecker crash (#24083).
- A fix for a code generator bug on AArch64 platforms resulting in invalid  
conditional jumps (#23746).
- Fixes for some memory leaks in GHCi (#24107, #24118)
- And a few other fixes

A full accounting of changes can be found in the [release notes](https://downloads.haskell.org/~ghc/9.6.4/docs/users_guide/9.6.4-notes.html). As  
some of the fixed issues do affect correctness users are encouraged to  
upgrade promptly.

We would like to thank Microsoft Azure, GitHub, IOG, the Zw3rk stake pool,  
Well-Typed, Tweag I/O, Serokell, Equinix, SimSpace, Haskell Foundation, and  
other anonymous contributors whose on-going financial and in-kind support has  
facilitated GHC maintenance and release management over the years. Finally,  
this release would not have been possible without the hundreds of open-source  
contributors whose work comprise this release.

As always, do give this release a try and open a [ticket](https://gitlab.haskell.org/ghc/ghc/-/issues/new) if you see  
anything amiss.

Happy hacking!

-Zubin

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**Author:** ![Kleidukos](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.haskell.org/kleidukos/32/1213_2.png) [@Kleidukos](https://discourse.haskell.org/u/Kleidukos)\
**Post date:** [January 9, 2024, 10:13am UTC](https://discourse.haskell.org/t/ghc-9-6-4-is-now-available/8502/2 "2024-01-09T10:13:17Z")

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Congratulations for the release!

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**Author:** ![mpilgrem](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.haskell.org/mpilgrem/32/2529_2.png) [@mpilgrem](https://discourse.haskell.org/u/mpilgrem)\
**Post date:** [January 9, 2024, 10:42pm UTC](https://discourse.haskell.org/t/ghc-9-6-4-is-now-available/8502/3 "2024-01-09T22:42:10Z")

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I have updated Stack’s default `setup-info` dictionary for these binary distributions, and added GHC 9.6.4’s global hints to `global-hints.yaml`.

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**Author:** ![juhp](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.haskell.org/juhp/32/323_2.png) [@juhp](https://discourse.haskell.org/u/juhp)\
**Post date:** [January 12, 2024, 2:34pm UTC](https://discourse.haskell.org/t/ghc-9-6-4-is-now-available/8502/4 "2024-01-12T14:34:26Z")

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Thanks

Fedora users can now install ghc9.6-9.6.4 from the Fedora updates & EPEL 9 repos.

[https://src.fedoraproject.org/rpms/ghc9.6](https://src.fedoraproject.org/rpms/ghc9.6)

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**Author:** ![juhp](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.haskell.org/juhp/32/323_2.png) [@juhp](https://discourse.haskell.org/u/juhp)\
**Post date:** [January 19, 2024, 7:15am UTC](https://discourse.haskell.org/t/ghc-9-6-4-is-now-available/8502/5 "2024-01-19T07:15:08Z")

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Stackage LTS is now on ghc-9.6.4 as of [lts-22.7](https://www.stackage.org/lts-22.7) released today