# SymbolicRegression stuck at version 0.22.2

**URL:** <https://discourse.julialang.org/t/symbolicregression-stuck-at-version-0-22-2/129823>\
**Category:** Modelling & Simulations\
**Tags:** package, symbolic-regression\
**Created:** [June 12, 2025, 12:12am UTC](https://discourse.julialang.org/t/symbolicregression-stuck-at-version-0-22-2/129823 "2025-06-12T00:12:13Z")\
**Posts on this page:** 7\
**Page:** 1

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**Author:** ![Sam\_P](https://avatars.discourse-cdn.com/v4/letter/s/ed8c4c/32.png) [@Sam\_P](https://discourse.julialang.org/u/Sam_P)\
**Post date:** [June 12, 2025, 12:12am UTC](https://discourse.julialang.org/t/symbolicregression-stuck-at-version-0-22-2/129823/1 "2025-06-12T00:12:13Z")

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Hi all. Just playing around with SymbolicRegression.jl and notice the version kept getting stuck on v0.22.2 instead of the latest v1.11.1. And when I force install that version, the ForwardDiff.jl went from 1.0.1 down to 0.10.38. I’m currently on Julia 1.11.5.

Since I use Turing a bit, which as I understand uses ForwradDiff as default, I’m just a tad worried that this would have some unintended consequences there. @MilesCranmer is this something that can be updated your end or does that need ForwardDiff to be refreshed as well?

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**Author:** ![MilesCranmer](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/milescranmer/32/21070_2.png) [@MilesCranmer](https://discourse.julialang.org/u/MilesCranmer)\
**Post date:** [June 12, 2025, 4:08pm UTC](https://discourse.julialang.org/t/symbolicregression-stuck-at-version-0-22-2/129823/2 "2025-06-12T16:08:48Z")

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It is likely my fault but I don’t see where yet, so tips appreciated. The main dependency relying on ForwardDiff is DynamicDiff.jl but that seems to be compatible with v1: [DynamicDiff.jl/Project.toml at 274736f413c97c6fc408dd18d596e8f4562624dc · MilesCranmer/DynamicDiff.jl · GitHub](https://github.com/MilesCranmer/DynamicDiff.jl/blob/274736f413c97c6fc408dd18d596e8f4562624dc/Project.toml#L16).

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**Author:** ![MilesCranmer](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/milescranmer/32/21070_2.png) [@MilesCranmer](https://discourse.julialang.org/u/MilesCranmer)\
**Post date:** [June 12, 2025, 4:13pm UTC](https://discourse.julialang.org/t/symbolicregression-stuck-at-version-0-22-2/129823/3 "2025-06-12T16:13:36Z")

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I just installed ForwardDiff.jl and SymbolicRegression.jl and they are both up-to-date. Adding Turing.jl makes it downgrade ForwardDiff.jl. However, Turing.jl is also compatible with v1 [Turing.jl/Project.toml at 8be9094cc3773a488f76a234900e4b977781dc05 · TuringLang/Turing.jl · GitHub](https://github.com/TuringLang/Turing.jl/blob/8be9094cc3773a488f76a234900e4b977781dc05/Project.toml#L69)

So I’m not sure 😵‍💫

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<div class="post-metadata">

**Author:** ![MilesCranmer](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/milescranmer/32/21070_2.png) [@MilesCranmer](https://discourse.julialang.org/u/MilesCranmer)\
**Post date:** [June 12, 2025, 4:49pm UTC](https://discourse.julialang.org/t/symbolicregression-stuck-at-version-0-22-2/129823/4 "2025-06-12T16:49:47Z")

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Ah. Confirmed my fault. It was this PR: [CompatHelper: bump compat for DifferentiationInterface to 0.7, (keep existing compat) by github-actions[bot] · Pull Request #451 · MilesCranmer/SymbolicRegression.jl · GitHub](https://github.com/MilesCranmer/SymbolicRegression.jl/pull/451). Will fix now.

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<div class="post-metadata">

**Author:** ![Sam\_P](https://avatars.discourse-cdn.com/v4/letter/s/ed8c4c/32.png) [@Sam\_P](https://discourse.julialang.org/u/Sam_P)\
**Post date:** [June 14, 2025, 5:37pm UTC](https://discourse.julialang.org/t/symbolicregression-stuck-at-version-0-22-2/129823/5 "2025-06-14T17:37:05Z")

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That seems to have worked - I have ForwardDiff v1.0.1 now side-by-side SymbolicRegression. But seems like I need to force install a version rather than auto-install the latest?

The order that I installed the packages were:

IJulia, Turing, and SymbolicRegression

but then I only get SymbolicRegression v0.22.2:

 ![image](https://global.discourse-cdn.com/julialang/original/3X/a/6/a626193153435a150e8a4be4a9884f82227eb283.png)

I can then either run `up` or force `add SymbolicRegression@1.11.2` and installed ok:

 ![image](https://global.discourse-cdn.com/julialang/original/3X/3/8/38a6bcb0ababe434414fefe2ec0e15f1764e1d63.png)

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<div class="post-metadata">

**Author:** ![MilesCranmer](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/milescranmer/32/21070_2.png) [@MilesCranmer](https://discourse.julialang.org/u/MilesCranmer)\
**Post date:** [June 14, 2025, 7:29pm UTC](https://discourse.julialang.org/t/symbolicregression-stuck-at-version-0-22-2/129823/6 "2025-06-14T19:29:19Z")

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Ok now it looks to be something other than SymbolicRegression.jl.

I think it’s this: [LogDensityProblemsAD.jl/Project.toml at 6c344c9d312d114509801b2756f52aaa614bc67e · tpapp/LogDensityProblemsAD.jl · GitHub](https://github.com/tpapp/LogDensityProblemsAD.jl/blob/6c344c9d312d114509801b2756f52aaa614bc67e/Project.toml#L39)

FYI @Tamas_Papp @devmotion I think the CompatHelper is failing for this repo for some reason?

I see this:

```julia
(@v1.11) pkg> activate --temp
  Activating new project at `/var/folders/1h/xyppkvx52cl6w3_h8bw_gdqh0000gr/T/jl_rm482Q`

(jl_rm482Q) pkg> add IJulia Turing SymbolicRegression
...
    Updating `/private/var/folders/1h/xyppkvx52cl6w3_h8bw_gdqh0000gr/T/jl_rm482Q/Project.toml`
  [7073ff75] + IJulia v1.29.0
  [8254be44] + SymbolicRegression v1.11.2
  [fce5fe82] + Turing v0.39.1
...
⌃ [f6369f11] + ForwardDiff v0.10.38

```

So indeed it’s still defaulting to the older ForwardDiff.jl. If I force that I see:

```julia
(jl_rm482Q) pkg> add ForwardDiff@1.0.1
   Resolving package versions...
    Updating `/private/var/folders/1h/xyppkvx52cl6w3_h8bw_gdqh0000gr/T/jl_rm482Q/Project.toml`
  [f6369f11] + ForwardDiff v1.0.1
    Updating `/private/var/folders/1h/xyppkvx52cl6w3_h8bw_gdqh0000gr/T/jl_rm482Q/Manifest.toml`
  [f6369f11] ↑ ForwardDiff v0.10.38 ⇒ v1.0.1
⌃ [996a588d] ↓ LogDensityProblemsAD v1.11.0 ⇒ v1.9.2
  [ce78b400] + SimpleUnPack v1.1.0

```

So looks like an older version of LogDensityProblemsAD.jl _ **implicitly** _ support it, but the explicit support (now) rules it out.

Looks like it was only added as an explicit dependency in [Drop support for Julia \< 1.9 by devmotion · Pull Request #36 · tpapp/LogDensityProblemsAD.jl · GitHub](https://github.com/tpapp/LogDensityProblemsAD.jl/pull/36). So the earlier version of the library is used instead because it has fewer dependencies.

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<div class="post-metadata">

**Author:** ![Tamas\_Papp](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/tamas_papp/32/25949_2.png) [@Tamas\_Papp](https://discourse.julialang.org/u/Tamas_Papp)\
**Post date:** [June 15, 2025, 5:23am UTC](https://discourse.julialang.org/t/symbolicregression-stuck-at-version-0-22-2/129823/7 "2025-06-15T05:23:05Z")

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> [@MilesCranmer](#):
>
> I think the CompatHelper is failing for this repo for some reason?

yes, it is the usual 60-day timeout. I am dusting off actions now, will bump versions and release.