diff --git a/foundry.toml b/foundry.toml
index 88c04b5..655d154 100644
--- a/foundry.toml
+++ b/foundry.toml
@@ -16,7 +16,7 @@ arbitrum-goerli = "https://goerli-rollup.arbitrum.io/rpc"
 arbitrum-sepolia = "https://sepolia-rollup.arbitrum.io/rpc"
 goerli = "https://rpc.ankr.com/eth_goerli"
 sepolia = "https://rpc.ankr.com/eth_sepolia"
-pangolin = "https://pangolin-rpc.darwinia.network"
+koi = "https://koi-rpc.darwinia.network"
 crab = "https://crab-rpc.darwinia.network"
 darwinia = "https://rpc.darwinia.network"
 arbitrum = "https://arb1.arbitrum.io/rpc"
@@ -26,6 +26,7 @@ mantle = "https://rpc.mantle.xyz"
 blast = "https://rpc.blast.io"
 optimism = "https://optimism-mainnet.infura.io/v3/${INFURA_KEY}"
 base = "https://mainnet.base.org"
+base-sepolia = "https://sepolia.base.org"
 scroll = "https://rpc.scroll.io"
 
 [etherscan]
@@ -36,7 +37,8 @@ arbitrum = { key = "${ETHERSCAN_ARBITRUM_KEY}" }
 arbitrum-goerli = { key = "${ETHERSCAN_ARBITRUM_KEY}" }
 arbitrum-sepolia = { key = "${ETHERSCAN_ARBITRUM_KEY}" }
 darwinia = { key = "${ETHERSCAN_DARWINIA_KEY}", url = "https://darwinia.api.subscan.io/api/scan/evm/contract/verifysource" }
-pangolin = { key = "${ETHERSCAN_DARWINIA_KEY}", url = "https://pangolin.api.subscan.io/api/scan/evm/contract/verifysource" }
+koi = { key = "${ETHERSCAN_DARWINIA_KEY}", url = "https://koi-scan.darwinia.network/api" }
 crab = { key = "${ETHERSCAN_DARWINIA_KEY}", url = "https://crab.api.subscan.io/api/scan/evm/contract/verifysource" }
 optimism = { key = "${ETHERSCAN_OPTIMISM_KEY}" }
 base = { key = "${ETHERSCAN_BASE_KEY}" }
+base-sepolia = { key = "${ETHERSCAN_BASE_KEY}" }
diff --git a/script/Chains.sol b/script/Chains.sol
index 53d223a..421f335 100644
--- a/script/Chains.sol
+++ b/script/Chains.sol
@@ -8,13 +8,13 @@ library Chains {
     uint256 internal constant Ethereum = 1;
     uint256 internal constant Goerli = 5;
     uint256 internal constant Optimism = 10;
-    uint256 internal constant Pangolin = 43;
     uint256 internal constant Crab = 44;
     uint256 internal constant Pangoro = 45;
     uint256 internal constant Darwinia = 46;
     uint256 internal constant Polygon = 137;
     uint256 internal constant Zksync = 324;
     uint256 internal constant OptimismGoerli = 420;
+    uint256 internal constant Koi = 701;
     uint256 internal constant Mantle = 5000;
     uint256 internal constant Base = 8453;
     uint256 internal constant Arbitrum = 42161;
@@ -35,8 +35,6 @@ library Chains {
             return "goerli";
         } else if (chainid == Optimism) {
             return "optimism";
-        } else if (chainid == Pangolin) {
-            return "pangolin";
         } else if (chainid == Crab) {
             return "crab";
         } else if (chainid == Pangoro) {
@@ -49,6 +47,8 @@ library Chains {
             return "zksync";
         } else if (chainid == OptimismGoerli) {
             return "optimism-goerli";
+        } else if (chainid == Koi) {
+            return "koi";
         } else if (chainid == Mantle) {
             return "mantle";
         } else if (chainid == Base) {