diff --git a/client/src/utils.rs b/client/src/utils.rs
index b4d9607c..4bae4158 100644
--- a/client/src/utils.rs
+++ b/client/src/utils.rs
@@ -1,10 +1,12 @@
 // List of Succinct Gateway addresses for chains.
-const GATEWAY_ADDRESSES: [(u32, &str); 6] = [
+const GATEWAY_ADDRESSES: [(u32, &str); 8] = [
     (1, "0x6e4f1e9ea315ebfd69d18c2db974eef6105fb803"),
     (5, "0x6e4f1e9ea315ebfd69d18c2db974eef6105fb803"),
     (100, "0x6e4f1e9ea315ebfd69d18c2db974eef6105fb803"),
     (420, "0x6e4f1e9ea315ebfd69d18c2db974eef6105fb803"),
     (17000, "0x6e4f1e9ea315ebfd69d18c2db974eef6105fb803"),
+    (42161, "0x2d27182206f0442885989626934ca9dd5290f979"),
+    (421614, "0x2d27182206f0442885989626934ca9dd5290f979"),
     (11155111, "0xaea9288f0b7a8c605c4d474c56e5e74f96bfd4b3"),
 ];
 
diff --git a/contracts/README.md b/contracts/README.md
index b00e6065..47db269f 100644
--- a/contracts/README.md
+++ b/contracts/README.md
@@ -25,16 +25,18 @@ forge test
 SUCCINCT_GATEWAY=[0x6e4f1e9ea315ebfd69d18c2db974eef6105fb803](https://etherscan.io/address/0x6e4f1e9ea315ebfd69d18c2db974eef6105fb803)
 SUCCINCT_FEE_VAULT=[0x5999d401444f15d262fdce310bb68bd234de11aa](https://etherscan.io/address/0x5999d401444f15d262fdce310bb68bd234de11aa)
 
-| Chain            | Address                                                                                                                          |
-|------------------|----------------------------------------------------------------------------------------------------------------------------------|
-| Mainnet          | [0x6e4f1e9ea315ebfd69d18c2db974eef6105fb803](https://etherscan.io/address/0x6e4f1e9ea315ebfd69d18c2db974eef6105fb803)            |
-| Goerli           | [0x6e4f1e9ea315ebfd69d18c2db974eef6105fb803](https://goerli.etherscan.io/address/0x6e4f1e9ea315ebfd69d18c2db974eef6105fb803)     |
-| Sepolia          | [0xaea9288f0b7a8c605c4d474c56e5e74f96bfd4b3](https://sepolia.etherscan.io/address/0xaea9288f0b7a8c605c4d474c56e5e74f96bfd4b3)    |
-| Holesky          | [0x6e4f1e9ea315ebfd69d18c2db974eef6105fb803](https://holesky.etherscan.io/address/0x6e4f1e9ea315ebfd69d18c2db974eef6105fb803)    |
-| Optimism         | [0x6e4f1e9ea315ebfd69d18c2db974eef6105fb803](https://optimistic.etherscan.io/address/0x6e4f1e9ea315ebfd69d18c2db974eef6105fb803) |
-| Arbitrum         | [0x2d27182206f0442885989626934ca9dd5290f979](https://arbiscan.io/address/0x2d27182206f0442885989626934ca9dd5290f979)             |
-| Arbitrum Sepolia | [0x2d27182206f0442885989626934ca9dd5290f979](https://sepolia.arbiscan.io/address/0x2d27182206f0442885989626934ca9dd5290f979)     |
-| Gnosis           | [0x6e4f1e9eA315EBFd69d18C2DB974EEf6105FB803](https://gnosisscan.io/address/0x6e4f1e9eA315EBFd69d18C2DB974EEf6105FB803)           |
+| Chain            | Chain ID | Address                                                                                                          |
+|------------------|----------|------------------------------------------------------------------------------------------------------------------|
+| Mainnet          | 1        | [0x6e4f1e9ea315ebfd69d18c2db974eef6105fb803](https://etherscan.io/address/0x6e4f1e9ea315ebfd69d18c2db974eef6105fb803)            |
+| Goerli           | 5        | [0x6e4f1e9ea315ebfd69d18c2db974eef6105fb803](https://goerli.etherscan.io/address/0x6e4f1e9ea315ebfd69d18c2db974eef6105fb803)     |
+| Gnosis           | 100      | [0x6e4f1e9eA315EBFd69d18C2DB974EEf6105FB803](https://gnosisscan.io/address/0x6e4f1e9eA315EBFd69d18C2DB974EEf6105FB803)           |
+| Optimism         | 420      | [0x6e4f1e9ea315ebfd69d18c2db974eef6105fb803](https://optimistic.etherscan.io/address/0x6e4f1e9ea315ebfd69d18c2db974eef6105fb803) |
+| Holesky          | 17000    | [0x6e4f1e9ea315ebfd69d18c2db974eef6105fb803](https://holesky.etherscan.io/address/0x6e4f1e9ea315ebfd69d18c2db974eef6105fb803)    |
+| Arbitrum         | 42161    | [0x2d27182206f0442885989626934ca9dd5290f979](https://arbiscan.io/address/0x2d27182206f0442885989626934ca9dd5290f979)             |
+| Arbitrum Sepolia | 421614   | [0x2d27182206f0442885989626934ca9dd5290f979](https://sepolia.arbiscan.io/address/0x2d27182206f0442885989626934ca9dd5290f979)     |
+| Sepolia          | 11155111 | [0xaea9288f0b7a8c605c4d474c56e5e74f96bfd4b3](https://sepolia.etherscan.io/address/0xaea9288f0b7a8c605c4d474c56e5e74f96bfd4b3)    |
+
+
 
 ## Deploying