# Testnet 3 Hard Fork - Grin upgrade required

**URL:** <https://forum.grin.mw/t/testnet-3-hard-fork-grin-upgrade-required/787>\
**Category:** Announcements\
**Created:** [September 10, 2018, 9:48pm UTC](https://forum.grin.mw/t/testnet-3-hard-fork-grin-upgrade-required/787 "2018-09-10T21:48:24Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![igno.peverell](https://yyz2.discourse-cdn.com/flex036/user_avatar/forum.grin.mw/igno.peverell/32/4_2.png) [@igno.peverell](https://forum.grin.mw/u/igno.peverell)\
**Post date:** [September 10, 2018, 9:48pm UTC](https://forum.grin.mw/t/testnet-3-hard-fork-grin-upgrade-required/787/1 "2018-09-10T21:48:24Z")

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We are testing a [simple hard fork on Testnet 3](https://github.com/mimblewimble/grin/pull/1478) to experiment and get a few under our belt before the stakes get a lot higher. The hard fork is setup to occur on block 95,000 which should be around Friday morning UTC. Please upgrade all your nodes in the coming days.

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**Author:** ![igno.peverell](https://yyz2.discourse-cdn.com/flex036/user_avatar/forum.grin.mw/igno.peverell/32/4_2.png) [@igno.peverell](https://forum.grin.mw/u/igno.peverell)\
**Post date:** [September 10, 2018, 9:49pm UTC](https://forum.grin.mw/t/testnet-3-hard-fork-grin-upgrade-required/787/2 "2018-09-10T21:49:26Z")

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