# Missing module named plotly.datatypes
**URL:** https://community.plotly.com/t/missing-module-named-plotly-datatypes/9527
**Category:** Dash Python
**Created:** [April 8, 2018, 9:57am UTC](https://community.plotly.com/t/missing-module-named-plotly-datatypes/9527 "2018-04-08T09:57:52Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@groxli](https://community.plotly.com/u/groxli)
#### Post date: [April 8, 2018, 9:57am UTC](https://community.plotly.com/t/missing-module-named-plotly-datatypes/9527/1 "2018-04-08T09:57:53Z")
I installed plotly Dash on my system (OS X running pthon 3.5), but when I try and import dash, I get the following error:
ImportError: No module named ‘plotly.datatypes’
I did a “pip install plotly --upgrade” for good measure, but still get the same error. Has anyone seen the same sort of error?
---
### Author:  [@chriddyp](https://community.plotly.com/u/chriddyp)
#### Post date: [April 8, 2018, 5:44pm UTC](https://community.plotly.com/t/missing-module-named-plotly-datatypes/9527/2 "2018-04-08T17:44:48Z")
Hm, for some reason you seem to have the “prerelease” version. Install the latest stable version with
```auto
pip install plotly==2.5.1
```
---
### Author:  [@groxli](https://community.plotly.com/u/groxli)
#### Post date: [April 9, 2018, 2:42am UTC](https://community.plotly.com/t/missing-module-named-plotly-datatypes/9527/3 "2018-04-09T02:42:41Z")
Thank you chriddyp! That fixed the issue. Not quite sure how I ended up with the prerelease version.