diff --git a/src/__snapshots__/prepareChainConfig.unit.test.ts.snap b/src/__snapshots__/prepareChainConfig.unit.test.ts.snap
index e58e43b1..bdd510ce 100644
--- a/src/__snapshots__/prepareChainConfig.unit.test.ts.snap
+++ b/src/__snapshots__/prepareChainConfig.unit.test.ts.snap
@@ -41,7 +41,7 @@ exports[`creates chain config with defaults 1`] = `
     "DataAvailabilityCommittee": false,
     "EnableArbOS": true,
     "GenesisBlockNum": 0,
-    "InitialArbOSVersion": 40,
+    "InitialArbOSVersion": 51,
     "InitialChainOwner": "0xd8da6bf26964af9d7eed9e03e53415d37aa96045",
     "MaxCodeSize": 24576,
     "MaxInitCodeSize": 49152,
diff --git a/src/createRollupPrepareDeploymentParamsConfig/__snapshots__/v2.1.unit.test.ts.snap b/src/createRollupPrepareDeploymentParamsConfig/__snapshots__/v2.1.unit.test.ts.snap
index 1598c732..c04d9bf9 100644
--- a/src/createRollupPrepareDeploymentParamsConfig/__snapshots__/v2.1.unit.test.ts.snap
+++ b/src/createRollupPrepareDeploymentParamsConfig/__snapshots__/v2.1.unit.test.ts.snap
@@ -3,7 +3,7 @@
 exports[`creates a config for a chain on top of a custom parent chain 1`] = `
 {
   "baseStake": 100000000000000000n,
-  "chainConfig": "{\\"chainId\\":123,\\"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\\":40,\\"InitialChainOwner\\":\\"0xd8da6bf26964af9d7eed9e03e53415d37aa96045\\",\\"GenesisBlockNum\\":0,\\"MaxCodeSize\\":24576,\\"MaxInitCodeSize\\":49152}}",
+  "chainConfig": "{\\"chainId\\":123,\\"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\\":\\"0xd8da6bf26964af9d7eed9e03e53415d37aa96045\\",\\"GenesisBlockNum\\":0,\\"MaxCodeSize\\":24576,\\"MaxInitCodeSize\\":49152}}",
   "chainId": 123n,
   "confirmPeriodBlocks": 1n,
   "extraChallengeTimeBlocks": 0n,
@@ -17,14 +17,14 @@ exports[`creates a config for a chain on top of a custom parent chain 1`] = `
     "futureSeconds": 5n,
   },
   "stakeToken": "0x0000000000000000000000000000000000000000",
-  "wasmModuleRoot": "0xdb698a2576298f25448bc092e52cf13b1e24141c997135d70f217d674bbeb69a",
+  "wasmModuleRoot": "0x8a7513bf7bb3e3db04b0d982d0e973bcf57bf8b88aef7c6d03dba3a81a56a499",
 }
 `;
 
 exports[`creates config for a chain on top of arbitrum one with defaults 1`] = `
 {
   "baseStake": 100000000000000000n,
-  "chainConfig": "{\\"chainId\\":69420,\\"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\\":40,\\"InitialChainOwner\\":\\"0xd8da6bf26964af9d7eed9e03e53415d37aa96045\\",\\"GenesisBlockNum\\":0,\\"MaxCodeSize\\":24576,\\"MaxInitCodeSize\\":49152}}",
+  "chainConfig": "{\\"chainId\\":69420,\\"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\\":\\"0xd8da6bf26964af9d7eed9e03e53415d37aa96045\\",\\"GenesisBlockNum\\":0,\\"MaxCodeSize\\":24576,\\"MaxInitCodeSize\\":49152}}",
   "chainId": 69420n,
   "confirmPeriodBlocks": 50400n,
   "extraChallengeTimeBlocks": 0n,
@@ -38,7 +38,7 @@ exports[`creates config for a chain on top of arbitrum one with defaults 1`] = `
     "futureSeconds": 3600n,
   },
   "stakeToken": "0x0000000000000000000000000000000000000000",
-  "wasmModuleRoot": "0xdb698a2576298f25448bc092e52cf13b1e24141c997135d70f217d674bbeb69a",
+  "wasmModuleRoot": "0x8a7513bf7bb3e3db04b0d982d0e973bcf57bf8b88aef7c6d03dba3a81a56a499",
 }
 `;
 
@@ -66,7 +66,7 @@ exports[`creates config for a chain on top of arbitrum one with overrides 1`] =
 exports[`creates config for a chain on top of arbitrum sepolia with defaults 1`] = `
 {
   "baseStake": 100000000000000000n,
-  "chainConfig": "{\\"chainId\\":69420,\\"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\\":40,\\"InitialChainOwner\\":\\"0xd8da6bf26964af9d7eed9e03e53415d37aa96045\\",\\"GenesisBlockNum\\":0,\\"MaxCodeSize\\":24576,\\"MaxInitCodeSize\\":49152}}",
+  "chainConfig": "{\\"chainId\\":69420,\\"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\\":\\"0xd8da6bf26964af9d7eed9e03e53415d37aa96045\\",\\"GenesisBlockNum\\":0,\\"MaxCodeSize\\":24576,\\"MaxInitCodeSize\\":49152}}",
   "chainId": 69420n,
   "confirmPeriodBlocks": 150n,
   "extraChallengeTimeBlocks": 0n,
@@ -80,7 +80,7 @@ exports[`creates config for a chain on top of arbitrum sepolia with defaults 1`]
     "futureSeconds": 3600n,
   },
   "stakeToken": "0x0000000000000000000000000000000000000000",
-  "wasmModuleRoot": "0xdb698a2576298f25448bc092e52cf13b1e24141c997135d70f217d674bbeb69a",
+  "wasmModuleRoot": "0x8a7513bf7bb3e3db04b0d982d0e973bcf57bf8b88aef7c6d03dba3a81a56a499",
 }
 `;
 
@@ -108,7 +108,7 @@ exports[`creates config for a chain on top of arbitrum sepolia with overrides 1`
 exports[`creates config for a chain on top of base sepolia with defaults 1`] = `
 {
   "baseStake": 100000000000000000n,
-  "chainConfig": "{\\"chainId\\":69420,\\"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\\":40,\\"InitialChainOwner\\":\\"0xd8da6bf26964af9d7eed9e03e53415d37aa96045\\",\\"GenesisBlockNum\\":0,\\"MaxCodeSize\\":24576,\\"MaxInitCodeSize\\":49152}}",
+  "chainConfig": "{\\"chainId\\":69420,\\"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\\":\\"0xd8da6bf26964af9d7eed9e03e53415d37aa96045\\",\\"GenesisBlockNum\\":0,\\"MaxCodeSize\\":24576,\\"MaxInitCodeSize\\":49152}}",
   "chainId": 69420n,
   "confirmPeriodBlocks": 900n,
   "extraChallengeTimeBlocks": 0n,
@@ -122,14 +122,14 @@ exports[`creates config for a chain on top of base sepolia with defaults 1`] = `
     "futureSeconds": 3600n,
   },
   "stakeToken": "0x0000000000000000000000000000000000000000",
-  "wasmModuleRoot": "0xdb698a2576298f25448bc092e52cf13b1e24141c997135d70f217d674bbeb69a",
+  "wasmModuleRoot": "0x8a7513bf7bb3e3db04b0d982d0e973bcf57bf8b88aef7c6d03dba3a81a56a499",
 }
 `;
 
 exports[`creates config for a chain on top of base with defaults 1`] = `
 {
   "baseStake": 100000000000000000n,
-  "chainConfig": "{\\"chainId\\":69420,\\"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\\":40,\\"InitialChainOwner\\":\\"0xd8da6bf26964af9d7eed9e03e53415d37aa96045\\",\\"GenesisBlockNum\\":0,\\"MaxCodeSize\\":24576,\\"MaxInitCodeSize\\":49152}}",
+  "chainConfig": "{\\"chainId\\":69420,\\"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\\":\\"0xd8da6bf26964af9d7eed9e03e53415d37aa96045\\",\\"GenesisBlockNum\\":0,\\"MaxCodeSize\\":24576,\\"MaxInitCodeSize\\":49152}}",
   "chainId": 69420n,
   "confirmPeriodBlocks": 302400n,
   "extraChallengeTimeBlocks": 0n,
@@ -143,6 +143,6 @@ exports[`creates config for a chain on top of base with defaults 1`] = `
     "futureSeconds": 3600n,
   },
   "stakeToken": "0x0000000000000000000000000000000000000000",
-  "wasmModuleRoot": "0xdb698a2576298f25448bc092e52cf13b1e24141c997135d70f217d674bbeb69a",
+  "wasmModuleRoot": "0x8a7513bf7bb3e3db04b0d982d0e973bcf57bf8b88aef7c6d03dba3a81a56a499",
 }
 `;
diff --git a/src/createRollupPrepareDeploymentParamsConfig/__snapshots__/v3.1.unit.test.ts.snap b/src/createRollupPrepareDeploymentParamsConfig/__snapshots__/v3.1.unit.test.ts.snap
index 673660fb..7c6a77d0 100644
--- a/src/createRollupPrepareDeploymentParamsConfig/__snapshots__/v3.1.unit.test.ts.snap
+++ b/src/createRollupPrepareDeploymentParamsConfig/__snapshots__/v3.1.unit.test.ts.snap
@@ -9,7 +9,7 @@ exports[`creates a config for a chain on top of a custom parent chain 1`] = `
     "replenishRateInBasis": 500n,
     "threshold": 4294967296n,
   },
-  "chainConfig": "{\\"chainId\\":123,\\"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\\":40,\\"InitialChainOwner\\":\\"0xd8da6bf26964af9d7eed9e03e53415d37aa96045\\",\\"GenesisBlockNum\\":0,\\"MaxCodeSize\\":24576,\\"MaxInitCodeSize\\":49152}}",
+  "chainConfig": "{\\"chainId\\":123,\\"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\\":\\"0xd8da6bf26964af9d7eed9e03e53415d37aa96045\\",\\"GenesisBlockNum\\":0,\\"MaxCodeSize\\":24576,\\"MaxInitCodeSize\\":49152}}",
   "chainId": 123n,
   "challengeGracePeriodBlocks": 2n,
   "confirmPeriodBlocks": 1n,
@@ -48,7 +48,7 @@ exports[`creates a config for a chain on top of a custom parent chain 1`] = `
   },
   "stakeToken": "0xabaF3D9f5cbDcE54cDc43b429d8f7154A3E19Afa",
   "validatorAfkBlocks": 4n,
-  "wasmModuleRoot": "0xdb698a2576298f25448bc092e52cf13b1e24141c997135d70f217d674bbeb69a",
+  "wasmModuleRoot": "0x8a7513bf7bb3e3db04b0d982d0e973bcf57bf8b88aef7c6d03dba3a81a56a499",
 }
 `;
 
@@ -61,7 +61,7 @@ exports[`creates config for a chain on top of arbitrum one with defaults 1`] = `
     "replenishRateInBasis": 500n,
     "threshold": 4294967296n,
   },
-  "chainConfig": "{\\"chainId\\":69420,\\"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\\":40,\\"InitialChainOwner\\":\\"0xd8da6bf26964af9d7eed9e03e53415d37aa96045\\",\\"GenesisBlockNum\\":0,\\"MaxCodeSize\\":24576,\\"MaxInitCodeSize\\":49152}}",
+  "chainConfig": "{\\"chainId\\":69420,\\"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\\":\\"0xd8da6bf26964af9d7eed9e03e53415d37aa96045\\",\\"GenesisBlockNum\\":0,\\"MaxCodeSize\\":24576,\\"MaxInitCodeSize\\":49152}}",
   "chainId": 69420n,
   "challengeGracePeriodBlocks": 14400n,
   "confirmPeriodBlocks": 50400n,
@@ -100,7 +100,7 @@ exports[`creates config for a chain on top of arbitrum one with defaults 1`] = `
   },
   "stakeToken": "0x82aF49447D8a07e3bd95BD0d56f35241523fBab1",
   "validatorAfkBlocks": 201600n,
-  "wasmModuleRoot": "0xdb698a2576298f25448bc092e52cf13b1e24141c997135d70f217d674bbeb69a",
+  "wasmModuleRoot": "0x8a7513bf7bb3e3db04b0d982d0e973bcf57bf8b88aef7c6d03dba3a81a56a499",
 }
 `;
 
@@ -165,7 +165,7 @@ exports[`creates config for a chain on top of arbitrum sepolia with defaults 1`]
     "replenishRateInBasis": 500n,
     "threshold": 4294967296n,
   },
-  "chainConfig": "{\\"chainId\\":69420,\\"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\\":40,\\"InitialChainOwner\\":\\"0xd8da6bf26964af9d7eed9e03e53415d37aa96045\\",\\"GenesisBlockNum\\":0,\\"MaxCodeSize\\":24576,\\"MaxInitCodeSize\\":49152}}",
+  "chainConfig": "{\\"chainId\\":69420,\\"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\\":\\"0xd8da6bf26964af9d7eed9e03e53415d37aa96045\\",\\"GenesisBlockNum\\":0,\\"MaxCodeSize\\":24576,\\"MaxInitCodeSize\\":49152}}",
   "chainId": 69420n,
   "challengeGracePeriodBlocks": 14400n,
   "confirmPeriodBlocks": 150n,
@@ -204,7 +204,7 @@ exports[`creates config for a chain on top of arbitrum sepolia with defaults 1`]
   },
   "stakeToken": "0x980B62Da83eFf3D4576C647993b0c1D7faf17c73",
   "validatorAfkBlocks": 201600n,
-  "wasmModuleRoot": "0xdb698a2576298f25448bc092e52cf13b1e24141c997135d70f217d674bbeb69a",
+  "wasmModuleRoot": "0x8a7513bf7bb3e3db04b0d982d0e973bcf57bf8b88aef7c6d03dba3a81a56a499",
 }
 `;
 
@@ -269,7 +269,7 @@ exports[`creates config for a chain on top of base sepolia with defaults 1`] = `
     "replenishRateInBasis": 500n,
     "threshold": 4294967296n,
   },
-  "chainConfig": "{\\"chainId\\":69420,\\"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\\":40,\\"InitialChainOwner\\":\\"0xd8da6bf26964af9d7eed9e03e53415d37aa96045\\",\\"GenesisBlockNum\\":0,\\"MaxCodeSize\\":24576,\\"MaxInitCodeSize\\":49152}}",
+  "chainConfig": "{\\"chainId\\":69420,\\"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\\":\\"0xd8da6bf26964af9d7eed9e03e53415d37aa96045\\",\\"GenesisBlockNum\\":0,\\"MaxCodeSize\\":24576,\\"MaxInitCodeSize\\":49152}}",
   "chainId": 69420n,
   "challengeGracePeriodBlocks": 86400n,
   "confirmPeriodBlocks": 900n,
@@ -308,7 +308,7 @@ exports[`creates config for a chain on top of base sepolia with defaults 1`] = `
   },
   "stakeToken": "0x4200000000000000000000000000000000000006",
   "validatorAfkBlocks": 1209600n,
-  "wasmModuleRoot": "0xdb698a2576298f25448bc092e52cf13b1e24141c997135d70f217d674bbeb69a",
+  "wasmModuleRoot": "0x8a7513bf7bb3e3db04b0d982d0e973bcf57bf8b88aef7c6d03dba3a81a56a499",
 }
 `;
 
@@ -321,7 +321,7 @@ exports[`creates config for a chain on top of base with defaults 1`] = `
     "replenishRateInBasis": 500n,
     "threshold": 4294967296n,
   },
-  "chainConfig": "{\\"chainId\\":69420,\\"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\\":40,\\"InitialChainOwner\\":\\"0xd8da6bf26964af9d7eed9e03e53415d37aa96045\\",\\"GenesisBlockNum\\":0,\\"MaxCodeSize\\":24576,\\"MaxInitCodeSize\\":49152}}",
+  "chainConfig": "{\\"chainId\\":69420,\\"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\\":\\"0xd8da6bf26964af9d7eed9e03e53415d37aa96045\\",\\"GenesisBlockNum\\":0,\\"MaxCodeSize\\":24576,\\"MaxInitCodeSize\\":49152}}",
   "chainId": 69420n,
   "challengeGracePeriodBlocks": 86400n,
   "confirmPeriodBlocks": 302400n,
@@ -360,6 +360,6 @@ exports[`creates config for a chain on top of base with defaults 1`] = `
   },
   "stakeToken": "0x4200000000000000000000000000000000000006",
   "validatorAfkBlocks": 1209600n,
-  "wasmModuleRoot": "0xdb698a2576298f25448bc092e52cf13b1e24141c997135d70f217d674bbeb69a",
+  "wasmModuleRoot": "0x8a7513bf7bb3e3db04b0d982d0e973bcf57bf8b88aef7c6d03dba3a81a56a499",
 }
 `;
diff --git a/src/createRollupPrepareDeploymentParamsConfigDefaults.ts b/src/createRollupPrepareDeploymentParamsConfigDefaults.ts
index b9728feb..634d9ef3 100644
--- a/src/createRollupPrepareDeploymentParamsConfigDefaults.ts
+++ b/src/createRollupPrepareDeploymentParamsConfigDefaults.ts
@@ -8,7 +8,7 @@ const defaultsV2Dot1 = {
   extraChallengeTimeBlocks: BigInt(0),
   stakeToken: zeroAddress,
   baseStake: parseEther(String(0.1)),
-  wasmModuleRoot: getConsensusReleaseByVersion(40).wasmModuleRoot,
+  wasmModuleRoot: getConsensusReleaseByVersion(51).wasmModuleRoot,
   loserStakeEscrow: zeroAddress,
   genesisBlockNum: BigInt(0),
 } as const;
@@ -37,7 +37,7 @@ const defaultsV3Dot1 = {
   layerZeroBigStepEdgeHeight: BigInt(2 ** 19),
   layerZeroSmallStepEdgeHeight: BigInt(2 ** 23),
   numBigStepLevel: 1,
-  wasmModuleRoot: getConsensusReleaseByVersion(40).wasmModuleRoot,
+  wasmModuleRoot: getConsensusReleaseByVersion(51).wasmModuleRoot,
 } as const;
 
 /**
diff --git a/src/prepareChainConfig.ts b/src/prepareChainConfig.ts
index 80e4fc69..7a596fb1 100644
--- a/src/prepareChainConfig.ts
+++ b/src/prepareChainConfig.ts
@@ -25,7 +25,7 @@ export const defaults = {
     EnableArbOS: true,
     AllowDebugPrecompiles: false,
     DataAvailabilityCommittee: false,
-    InitialArbOSVersion: 40,
+    InitialArbOSVersion: 51,
     GenesisBlockNum: 0,
     MaxCodeSize: 24_576,
     MaxInitCodeSize: 49_152,
diff --git a/src/wasmModuleRoot.ts b/src/wasmModuleRoot.ts
index 9b0978a8..1b373c76 100644
--- a/src/wasmModuleRoot.ts
+++ b/src/wasmModuleRoot.ts
@@ -73,6 +73,12 @@ const consensusReleases = [
     wasmModuleRoot: '0xdb698a2576298f25448bc092e52cf13b1e24141c997135d70f217d674bbeb69a',
     maxArbOSVersion: 40,
   },
+  {
+    // https://github.com/OffchainLabs/nitro/releases/tag/consensus-v51
+    version: 51,
+    wasmModuleRoot: '0x8a7513bf7bb3e3db04b0d982d0e973bcf57bf8b88aef7c6d03dba3a81a56a499',
+    maxArbOSVersion: 51,
+  },
 ] as const satisfies readonly ConsensusRelease[];
 
 type ConsensusReleases = typeof consensusReleases;