diff --git a/ArbOwner.sol b/ArbOwner.sol
index 8138b61..e7682ab 100644
--- a/ArbOwner.sol
+++ b/ArbOwner.sol
@@ -71,11 +71,21 @@ interface ArbOwner {
     /// @notice Get the network fee collector
     function getNetworkFeeAccount() external view returns (address);
 
+    /// @notice Get the infrastructure fee collector
+    /// @notice Available in ArbOS version 5 and above
+    function getInfraFeeAccount() external view returns (address);
+
     /// @notice Set the network fee collector
     function setNetworkFeeAccount(
         address newNetworkFeeAccount
     ) external;
 
+    /// @notice Set the infrastructure fee collector
+    /// @notice Available in ArbOS version 5 and above
+    function setInfraFeeAccount(
+        address newInfraFeeAccount
+    ) external;
+
     /// @notice Upgrades ArbOS to the requested version at the requested timestamp
     function scheduleArbOSUpgrade(uint64 newVersion, uint64 timestamp) external;
 
diff --git a/package.json b/package.json
index 14177cc..c3326d7 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@arbitrum/nitro-precompile-interfaces",
-  "version": "1.0.0",
+  "version": "5.0.0",
   "description": "Solidity interfaces for Arbitrum Nitro precompiled contracts",
   "author": "Offchain Labs, Inc.",
   "license": "BUSL-1.1",