diff --git a/README.md b/README.md
index c6f8a419..2be6ffe0 100644
--- a/README.md
+++ b/README.md
@@ -44,13 +44,23 @@ Jump to the docs for [Creating a Filler Integration](https://docs.uniswap.org/co
 
 # Deployment Addresses
 
+## Ethereum Mainnet
+
 | Contract                      | Address                                                                                                               | Source                                                                                                                    |
 | ---                           | ---                                                                                                                   | ---                                                                                                                       |
 | V2 Dutch Order Reactor        | [0x00000011F84B9aa48e5f8aA8B9897600006289Be](https://etherscan.io/address/0x00000011F84B9aa48e5f8aA8B9897600006289Be) | [V2DutchOrderReactor](https://github.com/Uniswap/UniswapX/blob/v2.0.0/src/reactors/V2DutchOrderReactor.sol)               |
 | Exclusive Dutch Order Reactor | [0x6000da47483062A0D734Ba3dc7576Ce6A0B645C4](https://etherscan.io/address/0x6000da47483062A0D734Ba3dc7576Ce6A0B645C4) | [ExclusiveDutchOrderReactor](https://github.com/Uniswap/UniswapX/blob/v1.1.0/src/reactors/ExclusiveDutchOrderReactor.sol) |
-| OrderQuoter                   | [0x54539967a06Fc0E3C3ED0ee320Eb67362D13C5fF](https://etherscan.io/address/0x54539967a06Fc0E3C3ED0ee320Eb67362D13C5fF) | [OrderQuoter](https://github.com/Uniswap/UniswapX/blob/v1.1.0/src/lens/OrderQuoter.sol)                                        |
+| OrderQuoter                   | [0x54539967a06Fc0E3C3ED0ee320Eb67362D13C5fF](https://etherscan.io/address/0x54539967a06Fc0E3C3ED0ee320Eb67362D13C5fF) | [OrderQuoter](https://github.com/Uniswap/UniswapX/blob/v1.1.0/src/lens/OrderQuoter.sol)                                   |
 | Permit2                       | [0x000000000022D473030F116dDEE9F6B43aC78BA3](https://etherscan.io/address/0x000000000022D473030F116dDEE9F6B43aC78BA3) | [Permit2](https://github.com/Uniswap/permit2)                                                                             |
 
+## Base
+
+| Contract                      | Address                                                                                                               | Source                                                                                                                    |
+| ---                           | ---                                                                                                                   | ---                                                                                                                       |
+| Priority Order Reactor        | [0x000000001Ec5656dcdB24D90DFa42742738De729](https://basescan.org/address/0x000000001Ec5656dcdB24D90DFa42742738De729) | [PriorityOrderReactor](https://github.com/Uniswap/UniswapX/blob/v2.1.0/src/reactors/PriorityOrderReactor.sol)             |
+| OrderQuoter                   | [0x88440407634f89873c5d9439987ac4be9725fea8](https://basescan.io/address/0x88440407634f89873c5d9439987ac4be9725fea8)  | [OrderQuoter](https://github.com/Uniswap/UniswapX/blob/v2.1.0/src/lens/OrderQuoter.sol)                                   |
+| Permit2                       | [0x000000000022D473030F116dDEE9F6B43aC78BA3](https://basescan.io/address/0x000000000022D473030F116dDEE9F6B43aC78BA3)  | [Permit2](https://github.com/Uniswap/permit2)                                                                             |
+
 # Usage
 
 ```