# Add TETU as collateral
**URL:** https://discourse.uma.xyz/t/add-tetu-as-collateral/1722
**Category:** technical UMIPs
**Created:** [May 11, 2022, 4:56pm UTC](https://discourse.uma.xyz/t/add-tetu-as-collateral/1722 "2022-05-11T16:56:50Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@G-0ne](https://discourse.uma.xyz/u/G-0ne)
#### Post date: [May 11, 2022, 4:56pm UTC](https://discourse.uma.xyz/t/add-tetu-as-collateral/1722/1 "2022-05-11T16:56:50Z")
**UMIP #** - tbd
- **UMIP title:** Add **TETU** as collateral currency
- **Author** Gregory Tumbiola ([Tumbiola@gmail.com](mailto:Tumbiola@gmail.com))
- **Status: Draft**
- **Created:** May 10 2022
- **Discourse Link:**
## Summary (2-5 sentences)
This UMIP proposes adding **TETU** for use as collateral in UMA contracts.
## Motivation
The addition of this collateral currency offers additional functionality to the UMA protocol and increases the range of contracts that can be built.
## Technical Specification
To accomplish this upgrade, the following changes need to be made:
- The **TETU** address **0x255707B70BF90aa112006E1b07B9AeA6De021424** needs to be added to the collateral currency whitelist introduced in UMIP-8.
- A final fee of **55,554** needs to be added for **TETU** in the Store contract.
## Rationale
This store fee was chosen as it is approximately equivalent to $1500 in line with other collateral currencies as determined by **([https://www.coingecko.com/en/coins/tetu](https://www.coingecko.com/en/coins/tetu))**
## Implementation
This change has no implementations other than the aforementioned governor transactions
## Security considerations
Adding a collateral currency introduces a level of risk into the UMA Ecosystem. This collateral type should be monitored to ensure that the proposed collateral continues to have value.
Contract deployers considering using this collateral in an UMA contract should refer to the guidelines on collateral type usage available here ([https://docs.umaproject.org/uma-tokenholders/guidence-on-collateral-currency-addition](https://docs.umaproject.org/uma-tokenholders/guidence-on-collateral-currency-addition)) to ensure appropriate use.
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### Author:  [@Mhairi](https://discourse.uma.xyz/u/Mhairi)
#### Post date: [May 16, 2022, 5:51pm UTC](https://discourse.uma.xyz/t/add-tetu-as-collateral/1722/2 "2022-05-16T17:51:50Z")
**Community Review Call Outcome - 16th May**
GO with conditions
- address comments on github
- Check whether tetu is deployed on Mainnet.
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### Author:  [@Mhairi](https://discourse.uma.xyz/u/Mhairi)
#### Post date: [May 26, 2022, 11:42am UTC](https://discourse.uma.xyz/t/add-tetu-as-collateral/1722/3 "2022-05-26T11:42:26Z")
Note that this UMIP did not go forward to an on-chain vote as it was discovered that Tetu had already been approved for use as collateral in [UMIP 158](https://github.com/UMAprotocol/UMIPs/blob/master/UMIPs/umip-158.md)