# Cannot upgrade dfx to 0.10.0: unable to gunzip file

**URL:** <https://forum.dfinity.org/t/cannot-upgrade-dfx-to-0-10-0-unable-to-gunzip-file/13069>\
**Category:** Command Line Tools\
**Created:** [May 17, 2022, 11:12pm UTC](https://forum.dfinity.org/t/cannot-upgrade-dfx-to-0-10-0-unable-to-gunzip-file/13069 "2022-05-17T23:12:56Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![mymikemiller](https://sea1.discourse-cdn.com/flex023/user_avatar/forum.dfinity.org/mymikemiller/32/694_2.png) [@mymikemiller](https://forum.dfinity.org/u/mymikemiller)\
**Post date:** [May 17, 2022, 11:12pm UTC](https://forum.dfinity.org/t/cannot-upgrade-dfx-to-0-10-0-unable-to-gunzip-file/13069/1 "2022-05-17T23:12:56Z")

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I’m trying to upgrade dfx from 0.9.3 to 0.10.0, and I’m getting the following error:

```auto
> dfx upgrade
Current version: 0.9.3
Fetching manifest https://sdk.dfinity.org/manifest.json
New version available: 0.10.0
Error: Invalid data: unable to gunzip file: Unexpected GZIP ID: value=[60, 63], expected=[31, 139]

```

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**Author:** ![peterparker](https://avatars.discourse-cdn.com/v4/letter/p/b9bd4f/32.png) [@peterparker](https://forum.dfinity.org/u/peterparker)\
**Post date:** [May 18, 2022, 7:54am UTC](https://forum.dfinity.org/t/cannot-upgrade-dfx-to-0-10-0-unable-to-gunzip-file/13069/2 "2022-05-18T07:54:32Z")

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`dfx upgrade` is broken at the moment. There is a workaround wish I not tested posted there 👉 [Dfx 0.10.0 is promoted - #3 by Severin](https://forum.dfinity.org/t/dfx-0-10-0-is-promoted/12870/3)