# Should I uninstall the  old CDS API before installing  new CDS API？

**URL:** <https://forum.ecmwf.int/t/should-i-uninstall-the-old-cds-api-before-installing-new-cds-api/10570>\
**Category:** API\
**Tags:** era5\
**Created:** [7 January 2025 09:19 UTC](https://forum.ecmwf.int/t/should-i-uninstall-the-old-cds-api-before-installing-new-cds-api/10570 "2025-01-07T09:19:14Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Xingang\_Lyu](https://forum.ecmwf.int/letter_avatar_proxy/v4/letter/x/2bfe46/32.png) [@Xingang\_Lyu](https://forum.ecmwf.int/u/Xingang_Lyu)\
**Post date:** [7 January 2025 09:19 UTC](https://forum.ecmwf.int/t/should-i-uninstall-the-old-cds-api-before-installing-new-cds-api/10570/1 "2025-01-07T09:19:14Z")

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In the past few years, I could download ERA5 smoothly and successfully using CDS API. But now I have to migrate to the new CDS API. Should I uninstall the old CDS API before installing new CDS API？I need a step-by step instruction. Thanks.

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**Author:** ![Alya\_Bolowich](https://forum.ecmwf.int/letter_avatar_proxy/v4/letter/a/7ba0ec/32.png) [@Alya\_Bolowich](https://forum.ecmwf.int/u/Alya_Bolowich)\
**Post date:** [7 January 2025 15:08 UTC](https://forum.ecmwf.int/t/should-i-uninstall-the-old-cds-api-before-installing-new-cds-api/10570/2 "2025-01-07T15:08:04Z")

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Hi Xingang Lu,

You can follow the instructions for the new CDS here:

[How to API](https://cds.climate.copernicus.eu/how-to-api)

You need to check that you have the correct version of the cdsapi package installed (\>=0.7.2) in your environment. You can uninstall the package and re-install it or upgrade it.