# Musl needed for 1.6.1 is missing on ubuntu 20.04

**URL:** <https://discourse.julialang.org/t/musl-needed-for-1-6-1-is-missing-on-ubuntu-20-04/62798>\
**Category:** General Usage\
**Created:** [June 12, 2021, 2:32pm UTC](https://discourse.julialang.org/t/musl-needed-for-1-6-1-is-missing-on-ubuntu-20-04/62798 "2021-06-12T14:32:44Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![dmg](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/dmg/32/207192_2.png) [@dmg](https://discourse.julialang.org/u/dmg)\
**Post date:** [June 12, 2021, 2:32pm UTC](https://discourse.julialang.org/t/musl-needed-for-1-6-1-is-missing-on-ubuntu-20-04/62798/1 "2021-06-12T14:32:44Z")

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Hi all,  
I’ve been successfully running 1.5.3 for a while now, but a package I installed (Actors) said I needed  
1.6 so I downloaded 1.6.1. It didn’t run on my Ubuntu 20.04 system and running ldd on the executable  
gave me “libc.musl-x86\_64.so.1 =\> not found”. After “sudo apt-get install musl” everything looks good.  
Just an FYI in case anyone else gets this.

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**Author:** ![giordano](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/giordano/32/2166_2.png) [@giordano](https://discourse.julialang.org/u/giordano)\
**Post date:** [June 12, 2021, 2:52pm UTC](https://discourse.julialang.org/t/musl-needed-for-1-6-1-is-missing-on-ubuntu-20-04/62798/2 "2021-06-12T14:52:51Z")

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> [@dmg](#):
>
> I downloaded 1.6.1. It didn’t run on my Ubuntu 20.04 system and running ldd on the executable  
> gave me “libc.musl-x86\_64.so.1 =\> not found”

I assume you installed the wrong executable: the one with musl as C library instead of Glibc

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**Author:** ![dmgoldschmidt](https://avatars.discourse-cdn.com/v4/letter/d/82dd89/32.png) [@dmgoldschmidt](https://discourse.julialang.org/u/dmgoldschmidt)\
**Post date:** [June 12, 2021, 3:07pm UTC](https://discourse.julialang.org/t/musl-needed-for-1-6-1-is-missing-on-ubuntu-20-04/62798/3 "2021-06-12T15:07:19Z")

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Right! I didn’t notice there are two links side by side on the download page and I must have clicked the wrong one. Thanks for pointing this out.