# CmdStan & Stan 2.35 release candidate

**URL:** <https://discourse.mc-stan.org/t/cmdstan-stan-2-35-release-candidate/35133>\
**Category:** General\
**Created:** [May 13, 2024, 8:01pm UTC](https://discourse.mc-stan.org/t/cmdstan-stan-2-35-release-candidate/35133 "2024-05-13T20:01:02Z")\
**Posts on this page:** 1\
**Showing post:** 18

<div class="post-metadata">

**Author:** ![WardBrian](https://yyz2.discourse-cdn.com/flex030/user_avatar/discourse.mc-stan.org/wardbrian/32/12078_2.png) [@WardBrian](https://discourse.mc-stan.org/u/WardBrian)\
**Post date:** [May 23, 2024, 1:28pm UTC](https://discourse.mc-stan.org/t/cmdstan-stan-2-35-release-candidate/35133/18 "2024-05-23T13:28:39Z")

</div>

## New release candidates

Please note that this morning (May 23) we released another round of release candidates to fix several bugs found in the previous set.

These included a change to the way we initialize the new pRNG used by Stan, which means **seeds have changed once again**.

Additional fixes include a crash in the new wiener\_lpdf functions, and a backported bugfix in the SUNDIALS library.

Additionally, Stan’s makefiles will now provide a warning if they cannot determine if the compiler being used supports the C++17 standard. Future versions may require this, so we have the warning now to determine how many users this would affect.

### Installation

If you are using cmdstanpy you can install the release candidate using

```no-highlight
cmdstanpy.install_cmdstan(version='2.35.0-rc3')

```

With CmdStanR you can install the release candidate using

```no-highlight
cmdstanr::install_cmdstan(version = "2.35.0-rc3", cores = 4)

```

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_[View the full topic](https://discourse.mc-stan.org/t/cmdstan-stan-2-35-release-candidate/35133)._