diff --git a/packages/contracts-bedrock/src/oasys/L1/build/interfaces/IL1BuildAgent.sol b/packages/contracts-bedrock/src/oasys/L1/build/interfaces/IL1BuildAgent.sol
index 2138e287d..ee478503e 100644
--- a/packages/contracts-bedrock/src/oasys/L1/build/interfaces/IL1BuildAgent.sol
+++ b/packages/contracts-bedrock/src/oasys/L1/build/interfaces/IL1BuildAgent.sol
@@ -75,12 +75,22 @@ interface IL1BuildAgent {
 
     function getBuilderGlobally(uint256 chainId) external view returns (address builder);
 
+    function getBuilderInternally(uint256 _chainId) external view returns (address);
+
     function computeInboxAddress(uint256 chainId) external view returns (address batchInbox);
 
     function isUniqueChainId(uint256 chainId) external view returns (bool);
 
     function isUpgradingExistingL2(uint256 _chainId) external returns (bool, address);
 
+    function pauseLegacyL1CrossDomainMessenger(uint256 _chainId, address addressManager) external;
+
+    function unpauseLegacyL1CrossDomainMessenger(
+        uint256 _chainId,
+        address addressManager,
+        address oldL1CrossDomainMessenger
+    ) external;
+
     function build(
         uint256 chainId,
         BuildConfig calldata cfg