# Multible dfx versions

**URL:** <https://forum.dfinity.org/t/multible-dfx-versions/1688>\
**Category:** Developers\
**Created:** [December 24, 2020, 8:17am UTC](https://forum.dfinity.org/t/multible-dfx-versions/1688 "2020-12-24T08:17:54Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![amr](https://avatars.discourse-cdn.com/v4/letter/a/73ab20/32.png) [@amr](https://forum.dfinity.org/u/amr)\
**Post date:** [December 24, 2020, 8:17am UTC](https://forum.dfinity.org/t/multible-dfx-versions/1688/1 "2020-12-24T08:17:54Z")

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If I have mutible versions installed How can I run dfx start with a specific version ?

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**Author:** ![Ori](https://avatars.discourse-cdn.com/v4/letter/o/ecae2f/32.png) [@Ori](https://forum.dfinity.org/u/Ori)\
**Post date:** [December 24, 2020, 10:22am UTC](https://forum.dfinity.org/t/multible-dfx-versions/1688/2 "2020-12-24T10:22:56Z")

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You can edit the “dfx” property in your project’s dfx.json file.

You can set it to any version cached on your machine, run `dfx cache list` to see the versions you have installed.

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**Author:** ![ueyamamasashi](https://sea1.discourse-cdn.com/flex023/user_avatar/forum.dfinity.org/ueyamamasashi/32/2575_2.png) [@ueyamamasashi](https://forum.dfinity.org/u/ueyamamasashi)\
**Post date:** [October 12, 2021, 10:36am UTC](https://forum.dfinity.org/t/multible-dfx-versions/1688/3 "2021-10-12T10:36:32Z")

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I think you have to specify the version locally even if you specify the version in dfx.json on the project side, but does it work if you just change dfx.json?