# Cannot update package in empty environment

**URL:** <https://discourse.julialang.org/t/cannot-update-package-in-empty-environment/67565>\
**Category:** General Usage\
**Tags:** question, package\
**Created:** [September 2, 2021, 11:14am UTC](https://discourse.julialang.org/t/cannot-update-package-in-empty-environment/67565 "2021-09-02T11:14:23Z")\
**Posts on this page:** 4\
**Page:** 1

<div class="post-metadata">

**Author:** ![Christopher\_Fisher](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/christopher_fisher/32/26132_2.png) [@Christopher\_Fisher](https://discourse.julialang.org/u/Christopher_Fisher)\
**Post date:** [September 2, 2021, 11:14am UTC](https://discourse.julialang.org/t/cannot-update-package-in-empty-environment/67565/1 "2021-09-02T11:14:23Z")

</div>

I want to update a [package](https://github.com/itsdfish/DifferentialEvolutionMCMC.jl) to the most recent version. For some reason, the most recent version does not seem to be recognized. Here is an example using an empty environment:

```julia
(@v1.6) pkg> st
      Status `~/.julia/environments/v1.6/Project.toml` (empty project)

(@v1.6) pkg> add DifferentialEvolutionMCMC @v0.5.11
   Resolving package versions...
ERROR: Unsatisfiable requirements detected for package DifferentialEvolutionMCMC [607db5a9]:
 DifferentialEvolutionMCMC [607db5a9] log:
 ├─possible versions are: 0.1.0-0.5.9 or uninstalled
 └─restricted to versions 0.5.11 by an explicit requirement — no versions left

```

When I add without specifying a version, v0.5.9 is installed:

```julia
(@v1.6) pkg> st
      Status `~/.julia/environments/v1.6/Project.toml`
  [607db5a9] DifferentialEvolutionMCMC v0.5.9

```

What would cause this to happen?

---

<div class="post-metadata">

**Author:** ![GunnarFarneback](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/gunnarfarneback/32/1827_2.png) [@GunnarFarneback](https://discourse.julialang.org/u/GunnarFarneback)\
**Post date:** [September 2, 2021, 11:29am UTC](https://discourse.julialang.org/t/cannot-update-package-in-empty-environment/67565/2 "2021-09-02T11:29:39Z")

</div>

See [General registry delays, and a workaround](https://discourse.julialang.org/t/general-registry-delays-and-a-workaround/67537).

---

<div class="post-metadata">

**Author:** ![Christopher\_Fisher](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/christopher_fisher/32/26132_2.png) [@Christopher\_Fisher](https://discourse.julialang.org/u/Christopher_Fisher)\
**Post date:** [September 2, 2021, 11:31am UTC](https://discourse.julialang.org/t/cannot-update-package-in-empty-environment/67565/3 "2021-09-02T11:31:28Z")

</div>

Much appreciated. Thank you for the link.

---

<div class="post-metadata">

**Author:** ![jling](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/jling/32/212909_2.png) [@jling](https://discourse.julialang.org/u/jling)\
**Post date:** [September 2, 2021, 11:49am UTC](https://discourse.julialang.org/t/cannot-update-package-in-empty-environment/67565/4 "2021-09-02T11:49:41Z")

</div>

> [@Christopher\_Fisher](#):
>
> `possible versions are: 0.1.0-0.5.9`

registry is not up to date