# Segmentation fault: 11 caused by Pkg.update()

**URL:** <https://discourse.julialang.org/t/segmentation-fault-11-caused-by-pkg-update/41926>\
**Category:** General Usage\
**Created:** [June 23, 2020, 10:02am UTC](https://discourse.julialang.org/t/segmentation-fault-11-caused-by-pkg-update/41926 "2020-06-23T10:02:15Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![nmatzke](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/nmatzke/32/7853_2.png) [@nmatzke](https://discourse.julialang.org/u/nmatzke)\
**Post date:** [June 23, 2020, 10:02am UTC](https://discourse.julialang.org/t/segmentation-fault-11-caused-by-pkg-update/41926/1 "2020-06-23T10:02:15Z")

</div>

Hi folks! I just installed Julia 1.4 on my Mac OSX 10.13. It seems to work fine, but then when I type Pkg.update() I get:

```julia
   _ _ _(_)_ | Documentation: https://docs.julialang.org
  (_) | (_) (_) |
   _ _ _| |_ __ _ | Type "?" for help, "]?" for Pkg help.
  | | | | | | |/ _` | |
  | | |_| | | | (_| | | Version 1.4.2 (2020-05-23)
 _/ |\ __'_|_|_|\__'_| | Official https://julialang.org/ release
|__/ |

julia> 

julia> Pkg.update()
    Cloning default registries into `~/.julia`
######################################################################## 100.0%
      Added registry `General` to `~/.julia/registries/General`
   Updating registry at `~/.julia/registries/General`

signal (11): Segmentation fault: 11
in expression starting at REPL[1]:1
unknown function (ip: 0x0)
Allocations: 77770631 (Pool: 77756128; Big: 14503); GC: 49
Segmentation fault: 11

```

I get the same if I use “JULIA\_PKG\_SERVER=[pkg.julialang.org](http://pkg.julialang.org) julia” from the Terminal as well (I see this mentioned some places online, something about libgit2?

Any help would be VERY appreciated!!  
Cheers,  
Nick

---

<div class="post-metadata">

**Author:** ![nmatzke](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/nmatzke/32/7853_2.png) [@nmatzke](https://discourse.julialang.org/u/nmatzke)\
**Post date:** [June 24, 2020, 6:43am UTC](https://discourse.julialang.org/t/segmentation-fault-11-caused-by-pkg-update/41926/2 "2020-06-24T06:43:25Z")

</div>

Update: It seems like the issue may have been the Fezzik precompiling of packages. When I added:

blacklist(“Interval”)  
blacklist(“AbstractPlots”)

…to the blacklist (based on a random hint in Fezzik issues), Fezzik complained a lot, but then julia loaded everything fine and seems not to crash on update.