diff --git a/arb/robinhood/mainnet/baseConfig.json b/arb/robinhood/mainnet/baseConfig.json
index 31947216..8671a2bd 100644
--- a/arb/robinhood/mainnet/baseConfig.json
+++ b/arb/robinhood/mainnet/baseConfig.json
@@ -1,8 +1,8 @@
 {
-    "chain": {
-        "id": 4663
-    },
-    "init": {
-        "genesis-json-file": "/config/robinhood-genesis.json"
-    }
+  "chain": {
+    "info-json": "[{\"chain-id\":4663,\"parent-chain-id\":1,\"parent-chain-is-arbitrum\":false,\"chain-name\":\"robinhood\",\"chain-config\":{\"chainId\":4663,\"homesteadBlock\":0,\"daoForkBlock\":null,\"daoForkSupport\":true,\"eip150Block\":0,\"eip150Hash\":\"0x0000000000000000000000000000000000000000000000000000000000000000\",\"eip155Block\":0,\"eip158Block\":0,\"byzantiumBlock\":0,\"constantinopleBlock\":0,\"petersburgBlock\":0,\"istanbulBlock\":0,\"muirGlacierBlock\":0,\"berlinBlock\":0,\"londonBlock\":0,\"clique\":{\"period\":0,\"epoch\":0},\"arbitrum\":{\"EnableArbOS\":true,\"AllowDebugPrecompiles\":false,\"DataAvailabilityCommittee\":false,\"InitialArbOSVersion\":51,\"InitialChainOwner\":\"0xc8451c5DE260E7ea1b879e7994967077e71230Ca\",\"GenesisBlockNum\":0,\"MaxCodeSize\":98304,\"MaxInitCodeSize\":196608}},\"rollup\":{\"bridge\":\"0xDf8755334ce7A73cCF6b581C02eA649AE3E864b3\",\"inbox\":\"0x1A07cc4BD17E0118BdB54D70990D2158AbAD7a2D\",\"sequencer-inbox\":\"0xBd0D173EEb87D57A09521c24388a12789F33ba96\",\"rollup\":\"0x23A19d23e89166adedbDcB432518AB01e4272D94\",\"validator-wallet-creator\":\"0xB7FE37712e46F28C8f22Ec4bAA33A09fb8B52BD0\",\"stake-token\":\"0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2\",\"deployed-at\":24994238}}]"
+  },
+  "init": {
+    "genesis-json-file": "/config/robinhood-genesis.json"
+  }
 }