# JuMP 0.19 installed by default

**URL:** <https://discourse.julialang.org/t/jump-0-19-installed-by-default/29588>\
**Category:** Optimization (Mathematical)\
**Tags:** installation\
**Created:** [October 7, 2019, 12:51pm UTC](https://discourse.julialang.org/t/jump-0-19-installed-by-default/29588 "2019-10-07T12:51:36Z")\
**Posts on this page:** 7\
**Page:** 1

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**Author:** ![leclere](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/leclere/32/3644_2.png) [@leclere](https://discourse.julialang.org/u/leclere)\
**Post date:** [October 7, 2019, 12:51pm UTC](https://discourse.julialang.org/t/jump-0-19-installed-by-default/29588/1 "2019-10-07T12:51:36Z")

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Hello,

setting up my julia environnement from a Jupyter notebook (Julia 1.0.2)  
I get JuMP 0.19 when using  
Pkg.add(“JuMP”)  
while 0.20 is presented as stable and compatible with Julia 1.0. Can someone tell me if it is normal ?

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**Author:** ![blegat](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/blegat/32/217090_2.png) [@blegat](https://discourse.julialang.org/u/blegat)\
**Post date:** [October 7, 2019, 12:52pm UTC](https://discourse.julialang.org/t/jump-0-19-installed-by-default/29588/2 "2019-10-07T12:52:42Z")

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You probably have one of the solver that have not yet been ported to MOI v0.9: [https://github.com/JuliaOpt/MathOptInterface.jl/issues/736](https://github.com/JuliaOpt/MathOptInterface.jl/issues/736)

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**Author:** ![leclere](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/leclere/32/3644_2.png) [@leclere](https://discourse.julialang.org/u/leclere)\
**Post date:** [October 7, 2019, 1:41pm UTC](https://discourse.julialang.org/t/jump-0-19-installed-by-default/29588/3 "2019-10-07T13:41:43Z")

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Indeed, it was Clp in my case. I suggested a small edit in the documentation.

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**Author:** ![frapac](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/frapac/32/6879_2.png) [@frapac](https://discourse.julialang.org/u/frapac)\
**Post date:** [October 7, 2019, 1:48pm UTC](https://discourse.julialang.org/t/jump-0-19-installed-by-default/29588/4 "2019-10-07T13:48:05Z")

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That is not expected: Gurobi is supposed to support JuMP 0.20. Could you return the output of?

```julia
julia> Pkg.status()

```

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<div class="post-metadata">

**Author:** ![leclere](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/leclere/32/3644_2.png) [@leclere](https://discourse.julialang.org/u/leclere)\
**Post date:** [October 7, 2019, 1:58pm UTC](https://discourse.julialang.org/t/jump-0-19-installed-by-default/29588/5 "2019-10-07T13:58:36Z")

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Sorry I meant Clp. Gurobi is working fine.

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**Author:** ![Ajaychat3](https://avatars.discourse-cdn.com/v4/letter/a/ecd19e/32.png) [@Ajaychat3](https://discourse.julialang.org/u/Ajaychat3)\
**Post date:** [October 7, 2019, 4:16pm UTC](https://discourse.julialang.org/t/jump-0-19-installed-by-default/29588/6 "2019-10-07T16:16:02Z")

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I cannot install CLP alongside JuMP@0.19.

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**Author:** ![frapac](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/frapac/32/6879_2.png) [@frapac](https://discourse.julialang.org/u/frapac)\
**Post date:** [October 7, 2019, 5:12pm UTC](https://discourse.julialang.org/t/jump-0-19-installed-by-default/29588/7 "2019-10-07T17:12:14Z")

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Yes, `Clp` is not yet supported by JuMP 0.20, as this version of JuMP drops the intermediate wrapper `LinQuadOptInterface`. @mtanneau is currently rewriting the Clp wrapper.