# Add a package of low version

**URL:** <https://discourse.julialang.org/t/add-a-package-of-low-version/73514>\
**Category:** General Usage\
**Tags:** question, package\
**Created:** [December 23, 2021, 2:02am UTC](https://discourse.julialang.org/t/add-a-package-of-low-version/73514 "2021-12-23T02:02:10Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![19801208812](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/19801208812/32/32163_2.png) [@19801208812](https://discourse.julialang.org/u/19801208812)\
**Post date:** [December 23, 2021, 2:02am UTC](https://discourse.julialang.org/t/add-a-package-of-low-version/73514/1 "2021-12-23T02:02:10Z")

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I asked about downloading a low-version package yesterday, that is, I want to add a package Pkg.add(Pkg.PackageSpec(url=“[GitHub - jbmuir/EnsembleKalmanInversion.jl: Ensemble Kalman Inversion in Julia](https://github.com/jbmuir/EnsembleKalmanInversion.jl)”)) The error is as shown in the picture

 ![4)LG3E4BXJ)4RT}M$J9PAQ1](https://global.discourse-cdn.com/julialang/original/3X/c/e/ce9c695a71066109337d24ef82a3f9757f1a5106.png)  
How can I solve this problem  
Best wishes wo you

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**Author:** ![pdeffebach](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/pdeffebach/32/10320_2.png) [@pdeffebach](https://discourse.julialang.org/u/pdeffebach)\
**Post date:** [December 23, 2021, 2:06am UTC](https://discourse.julialang.org/t/add-a-package-of-low-version/73514/2 "2021-12-23T02:06:59Z")

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I think this package has a local dependency the package author didn’t make public. You should contact the author about how to get it working.

Note, this package is unregistered. It’s not a failure of Julia’s package registration or compatability practices.

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<div class="post-metadata">

**Author:** ![19801208812](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/19801208812/32/32163_2.png) [@19801208812](https://discourse.julialang.org/u/19801208812)\
**Post date:** [December 23, 2021, 3:10am UTC](https://discourse.julialang.org/t/add-a-package-of-low-version/73514/4 "2021-12-23T03:10:40Z")

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Thank you !