# UMIP 138 -Upgrade Skinny Optimistic Oracle

**URL:** <https://discourse.uma.xyz/t/umip-138-upgrade-skinny-optimistic-oracle/1550>\
**Category:** technical UMIPs\
**Created:** [March 3, 2022, 3:23pm UTC](https://discourse.uma.xyz/t/umip-138-upgrade-skinny-optimistic-oracle/1550 "2022-03-03T15:23:36Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Mhairi](https://yyz2.discourse-cdn.com/flex032/user_avatar/discourse.uma.xyz/mhairi/32/48_2.png) [@Mhairi](https://discourse.uma.xyz/u/Mhairi)\
**Post date:** [March 3, 2022, 3:23pm UTC](https://discourse.uma.xyz/t/umip-138-upgrade-skinny-optimistic-oracle/1550/1 "2022-03-03T15:23:37Z")

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This UMIP should be viewed exactly as UMIP-135 but with an updated contract address to account for security upgrades in the `SkinnyOptimisticOracle`.

> <https://github.com/UMAprotocol/UMIPs/blob/master/UMIPs/umip-138.md>