diff --git a/foundry.toml b/foundry.toml
index c7b3561..dc204a6 100644
--- a/foundry.toml
+++ b/foundry.toml
@@ -67,10 +67,14 @@ arbitrum-goerli = "https://goerli-rollup.arbitrum.io/rpc"
 arbitrum-sepolia = "https://sepolia-rollup.arbitrum.io/rpc"
 pangolin = "https://pangolin-rpc.darwinia.network"
 crab = "https://crab-rpc.darwinia.network"
+darwinia = "https://rpc.darwinia.network"
+arbitrum = "https://arb1.arbitrum.io/rpc"
 
 [etherscan]
+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 = "${ETHERSCAN_DARWINIA_KEY}", url = "https://pangolin.api.subscan.io/api/scan/evm/contract/verifysource" }
 crab = { key = "${ETHERSCAN_DARWINIA_KEY}", url = "https://crab.api.subscan.io/api/scan/evm/contract/verifysource" }