diff --git a/docs/build-on-morph/developer-resources/1-contracts.md b/docs/build-on-morph/developer-resources/1-contracts.md
index 02d66362..3b6e579f 100644
--- a/docs/build-on-morph/developer-resources/1-contracts.md
+++ b/docs/build-on-morph/developer-resources/1-contracts.md
@@ -36,17 +36,17 @@ Contract address could be dynamic during the public testnet stage, so it is reco
 ### CrossDomainMessenger
 
 - L1CrossDomainMessenger: [0xfe26613a717a793560df394928bcc22ed0d8542e](https://sepolia.etherscan.io/address/0xfe26613a717a793560df394928bcc22ed0d8542e)
-- L2CrossDomainMessenger: [0x530000000000000000000000000000000000000F](https://explorer-testnet.morphl2.io/address/0x4200000000000000000000000000000000000007)
-- L2ToL1MessagePasser: [0x530000000000000000000000000000000000000F](https://explorer-testnet.morphl2.io/address/0x5300000000000000000000000000000000000001)
+- L2CrossDomainMessenger: [0x4200000000000000000000000000000000000007](https://explorer-testnet.morphl2.io/address/0x4200000000000000000000000000000000000007)
+- L2ToL1MessagePasser: [0x5300000000000000000000000000000000000001](https://explorer-testnet.morphl2.io/address/0x5300000000000000000000000000000000000001)
 
 ### Other Predeploys
 
 **Layer 2**
 
 - GasPriceOracle: [0x530000000000000000000000000000000000000F](https://explorer-testnet.morphl2.io/address/0x530000000000000000000000000000000000000F)
-- L1Block: [0x530000000000000000000000000000000000000F](https://explorer-testnet.morphl2.io/address/0x4200000000000000000000000000000000000015)
-- L1BlockNumber: [0x530000000000000000000000000000000000000F](https://explorer-testnet.morphl2.io/address/0x4200000000000000000000000000000000000013)
-- L1FeeVault: [0x530000000000000000000000000000000000000F](https://explorer-testnet.morphl2.io/address/0x420000000000000000000000000000000000001a)
-- SequencerFeeVault: [0x530000000000000000000000000000000000000F](https://explorer-testnet.morphl2.io/address/0x4200000000000000000000000000000000000011)
-- BaseFeeVault:[0x530000000000000000000000000000000000000F](https://explorer-testnet.morphl2.io/address/0x4200000000000000000000000000000000000019)
+- L1Block: [0x4200000000000000000000000000000000000015](https://explorer-testnet.morphl2.io/address/0x4200000000000000000000000000000000000015)
+- L1BlockNumber: [0x4200000000000000000000000000000000000013](https://explorer-testnet.morphl2.io/address/0x4200000000000000000000000000000000000013)
+- L1FeeVault: [0x420000000000000000000000000000000000001a](https://explorer-testnet.morphl2.io/address/0x420000000000000000000000000000000000001a)
+- SequencerFeeVault: [0x4200000000000000000000000000000000000011](https://explorer-testnet.morphl2.io/address/0x4200000000000000000000000000000000000011)
+- BaseFeeVault:[0x4200000000000000000000000000000000000019](https://explorer-testnet.morphl2.io/address/0x4200000000000000000000000000000000000019)
 - WETH: [0x4200000000000000000000000000000000000006](https://explorer-testnet.morphl2.io/address/0x4200000000000000000000000000000000000006)