diff --git a/.gitmodules b/.gitmodules
index c73698ab..553c5da7 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -7,3 +7,6 @@
 [submodule "lib/prb-math"]
 	path = lib/prb-math
 	url = https://github.com/PaulRBerg/prb-math
+[submodule "lib/fvm-solidity"]
+	path = lib/fvm-solidity
+	url = https://github.com/filecoin-project/fvm-solidity
diff --git a/CHANGELOG.md b/CHANGELOG.md
index dfcf0be6..0612cc13 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,15 +4,33 @@ All notable changes to this project will be documented in this file. The format
 
 ## [Unreleased]
 
+### Added
+
+### Changed
+
+### Fixed
+
+## [0.6.0-rc1] - Filecoin-Pay M3 rc1
+
+### Deployed
+- **Calibration**: [0xc77336Af9853817729F52fE5C3d465C18e87b9E0](https://calibration.filfox.info/en/address/0xc77336Af9853817729F52fE5C3d465C18e87b9E0)
+- **Mainnet**: [0xCe03746C078d99C38C4993f6d7322f6fcd3F5C45](https://filfox.info/en/address/0xCe03746C078d99C38C4993f6d7322f6fcd3F5C45)
+
 ### Added
 - Support for ERC-3009 (Transfer with authorization) ([#214](https://github.com/FilOzone/filecoin-pay/pull/214))
 - Support for relayers to submit deposit transactions ([#217](https://github.com/FilOzone/filecoin-pay/pull/217))
 - Network fee charging in settlement operations ([#224](https://github.com/FilOzone/filecoin-pay/pull/224))
 - IERC20 type improvements and label mapping keys ([#225](https://github.com/FilOzone/filecoin-pay/pull/225))
+- Fee auction functionality ([#229](https://github.com/FilOzone/filecoin-pay/pull/229))
+- Pagination support for `_getRailsForAddressAndToken` ([#237](https://github.com/FilOzone/filecoin-pay/pull/237))
 
 ### Changed
+- Restored settlement permissions allowing any participant to settle rails ([#221](https://github.com/FilOzone/filecoin-pay/pull/221))
 
 ### Fixed
+- Network fee handling in `settleTerminatedRailWithoutValidation` ([#223](https://github.com/FilOzone/filecoin-pay/pull/223))
+- CI workflow issue with npm dependencies in publish-abis workflow ([#236](https://github.com/FilOzone/filecoin-pay/pull/236))
+- Add completed security audit report to readme ([#231](https://github.com/FilOzone/filecoin-pay/pull/231))
 
 ## [0.5.0] - Filecoin-Pay Developer Preview
 
@@ -34,7 +52,6 @@ upcoming breaking changes.
 - Settlement operations now accessible by any participant (payer, payee, or operator) ([#219](https://github.com/FilOzone/filecoin-pay/pull/219), [#220](https://github.com/FilOzone/filecoin-pay/pull/220))
 
 ### Fixed
-- Network fee handling in `settleTerminatedRailWithoutValidation` ([#223](https://github.com/FilOzone/filecoin-pay/pull/223))
 - Settlement permission logic corrections ([#220](https://github.com/FilOzone/filecoin-pay/pull/220))
 
 ## [0.2.0] - Mainnet Alpha
diff --git a/lib/fvm-solidity b/lib/fvm-solidity
new file mode 160000
index 00000000..346eccf2
--- /dev/null
+++ b/lib/fvm-solidity
@@ -0,0 +1 @@
+Subproject commit 346eccf2f4daf5ad2aaab3d576f5c5d8955199f7
diff --git a/src/Payments.sol b/src/Payments.sol
index 34302b35..5daed6cc 100644
--- a/src/Payments.sol
+++ b/src/Payments.sol
@@ -1,6 +1,8 @@
 // SPDX-License-Identifier: Apache-2.0 OR MIT
 pragma solidity ^0.8.27;
 
+import {BURN_ADDRESS} from "fvm-solidity/FVMActors.sol";
+import {FVMPay} from "fvm-solidity/FVMPay.sol";
 import {IERC20} from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
 import {IERC20Permit} from "@openzeppelin/contracts/token/ERC20/extensions/IERC20Permit.sol";
 import {SafeERC20} from "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";
@@ -15,7 +17,7 @@ uint88 constant UINT88_MAX = 0xffffffffffffffffffffff;
 
 // FIL max supply cap is 2 billion
 uint88 constant MAX_AUCTION_START_PRICE = UINT88_MAX; // 309,485,009.821345068724781055 FIL
-uint88 constant FIRST_AUCTION_START_PRICE = 31.32 ether; // 31.32 FIL
+uint88 constant FIRST_AUCTION_START_PRICE = 0.5 ether; // 0.5 FIL
 
 interface IValidator {
     struct ValidationResult {
@@ -52,7 +54,6 @@ contract Payments is ReentrancyGuard {
     uint256 public constant NETWORK_FEE_NUMERATOR = 1; // 0.5%
     uint256 public constant NETWORK_FEE_DENOMINATOR = 200;
 
-    address payable private constant BURN_ADDRESS = payable(0xff00000000000000000000000000000000000063);
     IERC20 private constant NATIVE_TOKEN = IERC20(address(0));
 
     // Events
@@ -774,8 +775,7 @@ contract Payments is ReentrancyGuard {
         uint256 available = account.funds - account.lockupCurrent;
         require(amount <= available, Errors.InsufficientUnlockedFunds(available, amount));
         if (token == NATIVE_TOKEN) {
-            (bool success,) = payable(to).call{value: amount}("");
-            require(success, Errors.NativeTransferFailed(to, amount));
+            require(FVMPay.pay(to, amount), Errors.NativeTransferFailed(to, amount));
         } else {
             uint256 actual = transferOut(token, to, amount);
             if (amount != actual) {
@@ -1086,8 +1086,7 @@ contract Payments is ReentrancyGuard {
         // ceil()
         fee = (amount * NETWORK_FEE_NUMERATOR + (NETWORK_FEE_DENOMINATOR - 1)) / NETWORK_FEE_DENOMINATOR;
         if (token == NATIVE_TOKEN) {
-            (bool success,) = BURN_ADDRESS.call{value: fee}("");
-            require(success, Errors.NativeTransferFailed(BURN_ADDRESS, msg.value));
+            require(FVMPay.burn(fee), Errors.NativeTransferFailed(BURN_ADDRESS, fee));
         } else {
             accounts[token][address(this)].funds += fee;
             // start fee auction if necessary
@@ -1821,8 +1820,7 @@ contract Payments is ReentrancyGuard {
         auction.startPrice = uint88(auctionPrice);
         auction.startTime = uint168(block.timestamp);
 
-        (bool success,) = BURN_ADDRESS.call{value: msg.value}("");
-        require(success, Errors.NativeTransferFailed(BURN_ADDRESS, msg.value));
+        require(FVMPay.burn(msg.value), Errors.NativeTransferFailed(BURN_ADDRESS, msg.value));
 
         uint256 actual = transferOut(token, recipient, requested);
         fees.funds = available - actual;
diff --git a/test/AccountManagement.t.sol b/test/AccountManagement.t.sol
index ca901aa2..6863bd8f 100644
--- a/test/AccountManagement.t.sol
+++ b/test/AccountManagement.t.sol
@@ -1,14 +1,15 @@
 // SPDX-License-Identifier: Apache-2.0 OR MIT
 pragma solidity ^0.8.27;
 
-import {Test} from "forge-std/Test.sol";
+import {MockFVMTest} from "fvm-solidity/mocks/MockFVMTest.sol";
+import {IERC20} from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
+
 import {Payments} from "../src/Payments.sol";
 import {PaymentsTestHelpers} from "./helpers/PaymentsTestHelpers.sol";
 import {BaseTestHelper} from "./helpers/BaseTestHelper.sol";
-import {IERC20} from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
 import {Errors} from "../src/Errors.sol";
 
-contract AccountManagementTest is Test, BaseTestHelper {
+contract AccountManagementTest is MockFVMTest, BaseTestHelper {
     PaymentsTestHelpers helper;
     Payments payments;
 
@@ -18,7 +19,8 @@ contract AccountManagementTest is Test, BaseTestHelper {
 
     IERC20 private constant NATIVE_TOKEN = IERC20(address(0));
 
-    function setUp() public {
+    function setUp() public override {
+        super.setUp();
         // Create test helpers and setup environment
         helper = new PaymentsTestHelpers();
         helper.setupStandardTestEnvironment();
diff --git a/test/Burn.t.sol b/test/Burn.t.sol
index ee7fac7b..5ca158cf 100644
--- a/test/Burn.t.sol
+++ b/test/Burn.t.sol
@@ -2,14 +2,15 @@
 pragma solidity ^0.8.27;
 
 import {IERC20} from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
-import {Test} from "forge-std/Test.sol";
+import {MockFVMTest} from "fvm-solidity/mocks/MockFVMTest.sol";
+import {BURN_ADDRESS} from "fvm-solidity/FVMActors.sol";
 
 import {Dutch} from "../src/Dutch.sol";
 import {Errors} from "../src/Errors.sol";
 import {FIRST_AUCTION_START_PRICE, MAX_AUCTION_START_PRICE, Payments} from "../src/Payments.sol";
 import {PaymentsTestHelpers} from "./helpers/PaymentsTestHelpers.sol";
 
-contract BurnTest is Test {
+contract BurnTest is MockFVMTest {
     using Dutch for uint256;
 
     PaymentsTestHelpers helper = new PaymentsTestHelpers();
@@ -17,8 +18,6 @@ contract BurnTest is Test {
     uint256 testTokenRailId;
     uint256 nativeTokenRailId;
 
-    address payable private constant BURN_ADDRESS = payable(0xff00000000000000000000000000000000000063);
-
     IERC20 private testToken;
     IERC20 private constant NATIVE_TOKEN = IERC20(address(0));
     address private payer;
@@ -26,7 +25,10 @@ contract BurnTest is Test {
     address private operator;
     address private recipient;
 
-    function setUp() public {
+    function setUp() public override {
+        // Mock the FVM precompiles
+        super.setUp();
+
         helper.setupStandardTestEnvironment();
         payments = helper.payments();
 
diff --git a/test/BurnExtraFeeToken.t.sol b/test/BurnExtraFeeToken.t.sol
index 6249f0cd..7525b834 100644
--- a/test/BurnExtraFeeToken.t.sol
+++ b/test/BurnExtraFeeToken.t.sol
@@ -1,25 +1,29 @@
 // SPDX-License-Identifier: Apache-2.0 OR MIT
 pragma solidity ^0.8.27;
 
+import {MockFVMTest} from "fvm-solidity/mocks/MockFVMTest.sol";
+import {BURN_ADDRESS} from "fvm-solidity/FVMActors.sol";
+
 import {PaymentsTestHelpers} from "./helpers/PaymentsTestHelpers.sol";
 import {ExtraFeeToken} from "./mocks/ExtraFeeToken.sol";
 import {FIRST_AUCTION_START_PRICE, Payments} from "../src/Payments.sol";
-import {Test} from "forge-std/Test.sol";
 
-contract BurnFeeOnTransferTokenTest is Test {
+contract BurnFeeOnTransferTokenTest is MockFVMTest {
     PaymentsTestHelpers helper = new PaymentsTestHelpers();
     Payments payments;
     ExtraFeeToken feeToken;
 
     uint256 railId;
-    address payable private constant BURN_ADDRESS = payable(0xff00000000000000000000000000000000000063);
 
     address operator;
     address payer;
     address payee;
     address recipient;
 
-    function setUp() public {
+    function setUp() public override {
+        // Mock the FVM precompiles
+        super.setUp();
+
         helper.setupStandardTestEnvironment();
         payments = helper.payments();
         operator = helper.OPERATOR();
diff --git a/test/BurnFeeOnTransferToken.t.sol b/test/BurnFeeOnTransferToken.t.sol
index 5618423c..3674c4f1 100644
--- a/test/BurnFeeOnTransferToken.t.sol
+++ b/test/BurnFeeOnTransferToken.t.sol
@@ -1,25 +1,29 @@
 // SPDX-License-Identifier: Apache-2.0 OR MIT
 pragma solidity ^0.8.27;
 
+import {MockFVMTest} from "fvm-solidity/mocks/MockFVMTest.sol";
+import {BURN_ADDRESS} from "fvm-solidity/FVMActors.sol";
+
 import {PaymentsTestHelpers} from "./helpers/PaymentsTestHelpers.sol";
 import {MockFeeOnTransferTokenWithPermit} from "./mocks/MockFeeOnTransferTokenWithPermit.sol";
 import {FIRST_AUCTION_START_PRICE, Payments} from "../src/Payments.sol";
-import {Test} from "forge-std/Test.sol";
 
-contract BurnFeeOnTransferTokenTest is Test {
+contract BurnFeeOnTransferTokenTest is MockFVMTest {
     PaymentsTestHelpers helper = new PaymentsTestHelpers();
     Payments payments;
     MockFeeOnTransferTokenWithPermit feeToken;
 
     uint256 railId;
-    address payable private constant BURN_ADDRESS = payable(0xff00000000000000000000000000000000000063);
 
     address operator;
     address payer;
     address payee;
     address recipient;
 
-    function setUp() public {
+    function setUp() public override {
+        // Mock the FVM precompiles
+        super.setUp();
+
         helper.setupStandardTestEnvironment();
         payments = helper.payments();
         operator = helper.OPERATOR();