# Unable to install ray 1.9.0 on MacOS

**URL:** <https://discuss.ray.io/t/unable-to-install-ray-1-9-0-on-macos/4414>\
**Category:** Ray Core\
**Created:** [December 10, 2021, 6:08pm UTC](https://discuss.ray.io/t/unable-to-install-ray-1-9-0-on-macos/4414 "2021-12-10T18:08:13Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![Vasundhara\_Agarwal](https://sea2.discourse-cdn.com/flex020/user_avatar/discuss.ray.io/vasundhara_agarwal/32/1879_2.png) [@Vasundhara\_Agarwal](https://discuss.ray.io/u/Vasundhara_Agarwal)\
**Post date:** [December 10, 2021, 6:08pm UTC](https://discuss.ray.io/t/unable-to-install-ray-1-9-0-on-macos/4414/1 "2021-12-10T18:08:13Z")

</div>

I get the following error when trying to install ray 1.9.0 with `pip install ray==1.9.0` on MacOS 10.14.5.

```auto
ERROR: Could not find a version that satisfies the requirement ray==1.9.0 (from versions: 0.6.0, 0.6.1, 0.6.2, 0.6.3, 0.6.4, 0.6.5, 0.6.6, 0.7.0, 0.7.1, 0.7.2, 0.7.3, 0.7.4, 0.7.5, 0.7.6, 0.7.7, 0.8.0, 0.8.1, 0.8.2, 0.8.3, 0.8.4, 0.8.5, 0.8.6, 0.8.7, 1.0.0rc0, 1.0.0rc1, 1.0.0rc2, 1.0.0, 1.0.1, 1.0.1.post1, 1.1.0, 1.2.0, 1.3.0, 1.4.0rc1, 1.4.0rc2, 1.4.0, 1.4.1, 1.5.0, 1.5.1, 1.5.2)
ERROR: No matching distribution found for ray==1.9.0

```

Does anyone know what the problem is?

---

<div class="post-metadata">

**Author:** ![Chen\_Shen](https://sea2.discourse-cdn.com/flex020/user_avatar/discuss.ray.io/chen_shen/32/1486_2.png) [@Chen\_Shen](https://discuss.ray.io/u/Chen_Shen)\
**Post date:** [December 10, 2021, 9:32pm UTC](https://discuss.ray.io/t/unable-to-install-ray-1-9-0-on-macos/4414/2 "2021-12-10T21:32:17Z")

</div>

Hmm looks like a pip cache issue? especially this line:

```auto
ERROR: Could not find a version that satisfies the requirement ray==1.9.0 (from versions: 0.6.0, 0.6.1, 0.6.2, 0.6.3, 0.6.4, 0.6.5, 0.6.6, 0.7.0, 0.7.1, 0.7.2, 0.7.3, 0.7.4, 0.7.5, 0.7.6, 0.7.7, 0.8.0, 0.8.1, 0.8.2, 0.8.3, 0.8.4, 0.8.5, 0.8.6, 0.8.7, 1.0.0rc0, 1.0.0rc1, 1.0.0rc2, 1.0.0, 1.0.1, 1.0.1.post1, 1.1.0, 1.2.0, 1.3.0, 1.4.0rc1, 1.4.0rc2, 1.4.0, 1.4.1, 1.5.0, 1.5.1, 1.5.2)

```