# BilevelJump installation issue
**URL:** https://discourse.julialang.org/t/bileveljump-installation-issue/78605
**Category:** Optimization (Mathematical)
**Created:** [March 28, 2022, 10:19am UTC](https://discourse.julialang.org/t/bileveljump-installation-issue/78605 "2022-03-28T10:19:57Z")
**Posts on this page:** 5
**Page:** 1
### Author:  [@Fabrizio](https://discourse.julialang.org/u/Fabrizio)
#### Post date: [March 28, 2022, 10:19am UTC](https://discourse.julialang.org/t/bileveljump-installation-issue/78605/1 "2022-03-28T10:19:57Z")
Dear all, i am using Jump JuMP v0.22.1 `https://github.com/jump-dev/JuMP.jl.git#master` with MathOptInterface v0.10.5. Trying to installing BilevelJump give to me this issue:
ERROR: Unsatisfiable requirements detected for package MathOptInterface [b8f27783]:
MathOptInterface [b8f27783] log:
├─possible versions are: 0.5.0-1.1.1 or uninstalled
├─restricted to versions 0.10.4-0.10 by JuMP [4076af6c], leaving only versions 0.10.4-0.10.9
│ └─JuMP [4076af6c] log:
│ ├─possible versions are: 0.22.1 or uninstalled
│ └─JuMP [4076af6c] is fixed to version 0.22.1
└─restricted by compatibility requirements with BilevelJuMP [485130c0] to versions: 0.9.10-0.9.22 — no versions left
└─BilevelJuMP [485130c0] log:
├─possible versions are: 0.1.0-0.4.2 or uninstalled
└─restricted to versions \* by an explicit requirement, leaving only versions 0.1.0-0.4.2
Any hints to clear the problem? Thanks in advance
Fabrizio
---
### Author:  [@nilshg](https://discourse.julialang.org/u/nilshg)
#### Post date: [March 28, 2022, 10:31am UTC](https://discourse.julialang.org/t/bileveljump-installation-issue/78605/2 "2022-03-28T10:31:41Z")
Why are you on v0.22.1 (especially given you say you are using master?) - current release is 1.0.
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### Author:  [@Fabrizio](https://discourse.julialang.org/u/Fabrizio)
#### Post date: [March 28, 2022, 10:33am UTC](https://discourse.julialang.org/t/bileveljump-installation-issue/78605/3 "2022-03-28T10:33:47Z")
yes right i have just updated Jump to 1.0 , but this does not solve the problem
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### Author:  [@nilshg](https://discourse.julialang.org/u/nilshg)
#### Post date: [March 28, 2022, 10:36am UTC](https://discourse.julialang.org/t/bileveljump-installation-issue/78605/4 "2022-03-28T10:36:24Z")
Why are you trying to install MathOptInterface 0.10? Again that’s an outdated version, just do this:
```julia
(@v1.7) pkg> activate --temp
Activating new project at `C:\Users\ngudat\AppData\Local\Temp\jl_PxYrD4`
(jl_PxYrD4) pkg> add JuMP, MathOptInterface
Resolving package versions...
Updating `C:\Users\ngudat\AppData\Local\Temp\jl_PxYrD4\Project.toml`
[4076af6c] + JuMP v1.0.0
[b8f27783] + MathOptInterface v1.1.1
```
---
### Author:  [@Fabrizio](https://discourse.julialang.org/u/Fabrizio)
#### Post date: [March 28, 2022, 10:43am UTC](https://discourse.julialang.org/t/bileveljump-installation-issue/78605/5 "2022-03-28T10:43:55Z")
thanks, i also issued Pkg.free(“JuMP”) and reinstalled a fresh 1.0…somehow now BilevelJump gest installed!