diff --git a/foundry.toml b/foundry.toml
index 74e382c..e801f40 100644
--- a/foundry.toml
+++ b/foundry.toml
@@ -1,7 +1,6 @@
 [profile.default]
 libs = ['lib']
-solc_version = "0.8.21"   # Override for the solc version (setting this ignores `auto_detect_solc`)
-evm_version = "paris"     # to prevent usage of PUSH0, which is not supported on all chains
+solc_version = "0.8.19"
 
 optimizer = true
 optimizer_runs = 200
diff --git a/src/ERC1155A.sol b/src/ERC1155A.sol
index a3f2c36..89fb6a8 100644
--- a/src/ERC1155A.sol
+++ b/src/ERC1155A.sol
@@ -1,8 +1,8 @@
 /// SPDX-License-Identifier: Apache-2.0
-pragma solidity 0.8.21;
+pragma solidity ^0.8.19;
 
-import { IERC1155A } from "./interfaces/IERC1155A.sol";
-import { Strings } from "openzeppelin-contracts/contracts/utils/Strings.sol";
+import {IERC1155A} from "./interfaces/IERC1155A.sol";
+import {Strings} from "openzeppelin-contracts/contracts/utils/Strings.sol";
 
 /**
  * @title ERC1155A
@@ -43,13 +43,7 @@ abstract contract ERC1155A is IERC1155A {
     /// (full trust assumed)
     /// @dev If caller only approvedForAll, function executes without reducing allowance (full trust assumed)
     /// @dev SingleApprove is senior in execution flow, but isApprovedForAll is senior in allowance management
-    function safeTransferFrom(
-        address from,
-        address to,
-        uint256 id,
-        uint256 amount,
-        bytes calldata data
-    )
+    function safeTransferFrom(address from, address to, uint256 id, uint256 amount, bytes calldata data)
         public
         virtual
         override
@@ -98,10 +92,7 @@ abstract contract ERC1155A is IERC1155A {
         uint256 id,
         uint256 amount,
         bytes calldata data
-    )
-        internal
-        virtual
-    {
+    ) internal virtual {
         balanceOf[from][id] -= amount;
         balanceOf[to][id] += amount;
 
@@ -135,11 +126,7 @@ abstract contract ERC1155A is IERC1155A {
         uint256[] calldata ids,
         uint256[] calldata amounts,
         bytes calldata data
-    )
-        public
-        virtual
-        override
-    {
+    ) public virtual override {
         bool singleApproval;
         uint256 len = ids.length;
 
@@ -185,10 +172,7 @@ abstract contract ERC1155A is IERC1155A {
     }
 
     /// @dev Implementation copied from solmate/ERC1155
-    function balanceOfBatch(
-        address[] calldata owners,
-        uint256[] calldata ids
-    )
+    function balanceOfBatch(address[] calldata owners, uint256[] calldata ids)
         public
         view
         virtual
@@ -261,11 +245,7 @@ abstract contract ERC1155A is IERC1155A {
 
     /// @notice Public function for increasing multiple id approval amount at once
     /// @dev extension of single id increase allowance
-    function increaseAllowanceForMany(
-        address spender,
-        uint256[] memory ids,
-        uint256[] memory addedValues
-    )
+    function increaseAllowanceForMany(address spender, uint256[] memory ids, uint256[] memory addedValues)
         public
         virtual
         returns (bool)
@@ -285,11 +265,7 @@ abstract contract ERC1155A is IERC1155A {
 
     /// @notice Public function for decreasing multiple id approval amount at once
     /// @dev extension of single id decrease allowance
-    function decreaseAllowanceForMany(
-        address spender,
-        uint256[] memory ids,
-        uint256[] memory subtractedValues
-    )
+    function decreaseAllowanceForMany(address spender, uint256[] memory ids, uint256[] memory subtractedValues)
         public
         virtual
         returns (bool)
@@ -311,12 +287,7 @@ abstract contract ERC1155A is IERC1155A {
     /// @dev Only to be used by address(this)
     /// @dev Notice `owner` param, only contract functions should be able to define it
     /// @dev Re-adapted from ERC20
-    function _decreaseAllowance(
-        address owner,
-        address spender,
-        uint256 id,
-        uint256 subtractedValue
-    )
+    function _decreaseAllowance(address owner, address spender, uint256 id, uint256 subtractedValue)
         internal
         virtual
         returns (bool)
@@ -399,12 +370,7 @@ abstract contract ERC1155A is IERC1155A {
     }
 
     /// @dev Implementation copied from solmate/ERC1155
-    function _batchMint(
-        address to,
-        uint256[] memory ids,
-        uint256[] memory amounts,
-        bytes memory data
-    )
+    function _batchMint(address to, uint256[] memory ids, uint256[] memory amounts, bytes memory data)
         internal
         virtual
     {
@@ -492,13 +458,7 @@ abstract contract ERC1155TokenReceiver {
         return ERC1155TokenReceiver.onERC1155Received.selector;
     }
 
-    function onERC1155BatchReceived(
-        address,
-        address,
-        uint256[] calldata,
-        uint256[] calldata,
-        bytes calldata
-    )
+    function onERC1155BatchReceived(address, address, uint256[] calldata, uint256[] calldata, bytes calldata)
         external
         virtual
         returns (bytes4)
diff --git a/src/interfaces/IERC1155A.sol b/src/interfaces/IERC1155A.sol
index e9cbdff..838682e 100644
--- a/src/interfaces/IERC1155A.sol
+++ b/src/interfaces/IERC1155A.sol
@@ -1,7 +1,7 @@
 /// SPDX-License-Identifier: Apache-2.0
-pragma solidity 0.8.21;
+pragma solidity ^0.8.19;
 
-import { IERC1155 } from "openzeppelin-contracts/contracts/token/ERC1155/IERC1155.sol";
+import {IERC1155} from "openzeppelin-contracts/contracts/token/ERC1155/IERC1155.sol";
 
 interface IERC1155A is IERC1155 {
     /*//////////////////////////////////////////////////////////////
@@ -41,21 +41,13 @@ interface IERC1155A is IERC1155 {
 
     /// @notice Public function for increasing multiple id approval amount at once
     /// @dev extension of single id increase allowance
-    function increaseAllowanceForMany(
-        address spender,
-        uint256[] memory ids,
-        uint256[] memory addedValues
-    )
+    function increaseAllowanceForMany(address spender, uint256[] memory ids, uint256[] memory addedValues)
         external
         returns (bool);
 
     /// @notice Public function for decreasing multiple id approval amount at once
     /// @dev extension of single id decrease allowance
-    function decreaseAllowanceForMany(
-        address spender,
-        uint256[] memory ids,
-        uint256[] memory subtractedValues
-    )
+    function decreaseAllowanceForMany(address spender, uint256[] memory ids, uint256[] memory subtractedValues)
         external
         returns (bool);
 
diff --git a/src/interfaces/ITransmuter.sol b/src/interfaces/ITransmuter.sol
index b6e8fdf..1057e93 100644
--- a/src/interfaces/ITransmuter.sol
+++ b/src/interfaces/ITransmuter.sol
@@ -1,5 +1,5 @@
 /// SPDX-License-Identifier: Apache-2.0
-pragma solidity 0.8.21;
+pragma solidity ^0.8.19;
 
 interface ITransmuter {
     /// @notice id given here needs to be the same as id on Source!
@@ -9,12 +9,7 @@ interface ITransmuter {
     /// @param name name of the ERC20 to create
     /// @param symbol symbol of the ERC20 to create
     /// @param decimals decimals of the ERC20 to create
-    function registerTransmuter(
-        uint256 id,
-        string memory name,
-        string memory symbol,
-        uint8 decimals
-    )
+    function registerTransmuter(uint256 id, string memory name, string memory symbol, uint8 decimals)
         external
         returns (address);
 
diff --git a/src/test/ERC1155.t.sol b/src/test/ERC1155.t.sol
index 4c95f02..356b323 100644
--- a/src/test/ERC1155.t.sol
+++ b/src/test/ERC1155.t.sol
@@ -1,10 +1,10 @@
 /// SPDX-License-Identifier: Apache-2.0
-pragma solidity 0.8.21;
+pragma solidity ^0.8.19;
 
-import { DSTestPlus } from "solmate/test/utils/DSTestPlus.sol";
-import { DSInvariantTest } from "solmate/test/utils/DSInvariantTest.sol";
-import { ERC1155TokenReceiver } from "solmate/tokens/ERC1155.sol";
-import { MockERC1155A } from "./mocks/MockERC1155A.sol";
+import {DSTestPlus} from "solmate/test/utils/DSTestPlus.sol";
+import {DSInvariantTest} from "solmate/test/utils/DSInvariantTest.sol";
+import {ERC1155TokenReceiver} from "solmate/tokens/ERC1155.sol";
+import {MockERC1155A} from "./mocks/MockERC1155A.sol";
 
 /**
  * @title ERC1155 Test Suite from Solmate re-adapted for ERC1155A
@@ -20,13 +20,7 @@ contract ERC1155Recipient is ERC1155TokenReceiver {
     uint256 public amount;
     bytes public mintData;
 
-    function onERC1155Received(
-        address _operator,
-        address _from,
-        uint256 _id,
-        uint256 _amount,
-        bytes calldata _data
-    )
+    function onERC1155Received(address _operator, address _from, uint256 _id, uint256 _amount, bytes calldata _data)
         public
         override
         returns (bytes4)
@@ -60,11 +54,7 @@ contract ERC1155Recipient is ERC1155TokenReceiver {
         uint256[] calldata _ids,
         uint256[] calldata _amounts,
         bytes calldata _data
-    )
-        external
-        override
-        returns (bytes4)
-    {
+    ) external override returns (bytes4) {
         batchOperator = _operator;
         batchFrom = _from;
         _batchIds = _ids;
@@ -76,13 +66,7 @@ contract ERC1155Recipient is ERC1155TokenReceiver {
 }
 
 contract RevertingERC1155Recipient is ERC1155TokenReceiver {
-    function onERC1155Received(
-        address,
-        address,
-        uint256,
-        uint256,
-        bytes calldata
-    )
+    function onERC1155Received(address, address, uint256, uint256, bytes calldata)
         public
         pure
         override
@@ -91,13 +75,7 @@ contract RevertingERC1155Recipient is ERC1155TokenReceiver {
         revert(string(abi.encodePacked(ERC1155TokenReceiver.onERC1155Received.selector)));
     }
 
-    function onERC1155BatchReceived(
-        address,
-        address,
-        uint256[] calldata,
-        uint256[] calldata,
-        bytes calldata
-    )
+    function onERC1155BatchReceived(address, address, uint256[] calldata, uint256[] calldata, bytes calldata)
         external
         pure
         override
@@ -108,13 +86,7 @@ contract RevertingERC1155Recipient is ERC1155TokenReceiver {
 }
 
 contract WrongReturnDataERC1155Recipient is ERC1155TokenReceiver {
-    function onERC1155Received(
-        address,
-        address,
-        uint256,
-        uint256,
-        bytes calldata
-    )
+    function onERC1155Received(address, address, uint256, uint256, bytes calldata)
         public
         pure
         override
@@ -123,13 +95,7 @@ contract WrongReturnDataERC1155Recipient is ERC1155TokenReceiver {
         return 0xCAFEBEEF;
     }
 
-    function onERC1155BatchReceived(
-        address,
-        address,
-        uint256[] calldata,
-        uint256[] calldata,
-        bytes calldata
-    )
+    function onERC1155BatchReceived(address, address, uint256[] calldata, uint256[] calldata, bytes calldata)
         external
         pure
         override
@@ -139,7 +105,7 @@ contract WrongReturnDataERC1155Recipient is ERC1155TokenReceiver {
     }
 }
 
-contract NonERC1155Recipient { }
+contract NonERC1155Recipient {}
 
 contract ERC1155Test is DSTestPlus, ERC1155TokenReceiver {
     MockERC1155A token;
@@ -893,12 +859,7 @@ contract ERC1155Test is DSTestPlus, ERC1155TokenReceiver {
         assertBytesEq(to.mintData(), mintData);
     }
 
-    function testBatchMintToEOA(
-        address to,
-        uint256[] memory ids,
-        uint256[] memory amounts,
-        bytes memory mintData
-    )
+    function testBatchMintToEOA(address to, uint256[] memory ids, uint256[] memory amounts, bytes memory mintData)
         public
     {
         if (to == address(0)) to = address(0xBEEF);
@@ -932,11 +893,7 @@ contract ERC1155Test is DSTestPlus, ERC1155TokenReceiver {
         }
     }
 
-    function testBatchMintToERC1155Recipient(
-        uint256[] memory ids,
-        uint256[] memory amounts,
-        bytes memory mintData
-    )
+    function testBatchMintToERC1155Recipient(uint256[] memory ids, uint256[] memory amounts, bytes memory mintData)
         public
     {
         ERC1155Recipient to = new ERC1155Recipient();
@@ -996,9 +953,7 @@ contract ERC1155Test is DSTestPlus, ERC1155TokenReceiver {
         uint256[] memory mintAmounts,
         uint256[] memory burnAmounts,
         bytes memory mintData
-    )
-        public
-    {
+    ) public {
         if (to == address(0)) to = address(0xBEEF);
 
         if (uint256(uint160(to)) <= 18 || to.code.length > 0) return;
@@ -1049,9 +1004,7 @@ contract ERC1155Test is DSTestPlus, ERC1155TokenReceiver {
         uint256 transferAmount,
         address to,
         bytes memory transferData
-    )
-        public
-    {
+    ) public {
         if (to == address(0)) to = address(0xBEEF);
 
         if (uint256(uint160(to)) <= 18 || to.code.length > 0) return;
@@ -1081,9 +1034,7 @@ contract ERC1155Test is DSTestPlus, ERC1155TokenReceiver {
         bytes memory mintData,
         uint256 transferAmount,
         bytes memory transferData
-    )
-        public
-    {
+    ) public {
         ERC1155Recipient to = new ERC1155Recipient();
 
         address from = address(0xABCD);
@@ -1113,9 +1064,7 @@ contract ERC1155Test is DSTestPlus, ERC1155TokenReceiver {
         uint256 transferAmount,
         address to,
         bytes memory transferData
-    )
-        public
-    {
+    ) public {
         if (to == address(0)) to = address(0xBEEF);
 
         if (uint256(uint160(to)) <= 18 || to.code.length > 0) return;
@@ -1137,9 +1086,7 @@ contract ERC1155Test is DSTestPlus, ERC1155TokenReceiver {
         uint256[] memory transferAmounts,
         bytes memory mintData,
         bytes memory transferData
-    )
-        public
-    {
+    ) public {
         if (to == address(0)) to = address(0xBEEF);
 
         if (uint256(uint160(to)) <= 18 || to.code.length > 0) return;
@@ -1189,9 +1136,7 @@ contract ERC1155Test is DSTestPlus, ERC1155TokenReceiver {
         uint256[] memory transferAmounts,
         bytes memory mintData,
         bytes memory transferData
-    )
-        public
-    {
+    ) public {
         address from = address(0xABCD);
 
         ERC1155Recipient to = new ERC1155Recipient();
@@ -1245,9 +1190,7 @@ contract ERC1155Test is DSTestPlus, ERC1155TokenReceiver {
         uint256[] memory ids,
         uint256[] memory amounts,
         bytes memory mintData
-    )
-        public
-    {
+    ) public {
         uint256 minLength = min3(tos.length, ids.length, amounts.length);
 
         address[] memory normalizedTos = new address[](minLength);
@@ -1288,11 +1231,7 @@ contract ERC1155Test is DSTestPlus, ERC1155TokenReceiver {
         token.mint(address(new RevertingERC1155Recipient()), id, mintAmount, mintData);
     }
 
-    function testFailMintToWrongReturnDataERC155Recipient(
-        uint256 id,
-        uint256 mintAmount,
-        bytes memory mintData
-    )
+    function testFailMintToWrongReturnDataERC155Recipient(uint256 id, uint256 mintAmount, bytes memory mintData)
         public
     {
         token.mint(address(new RevertingERC1155Recipient()), id, mintAmount, mintData);
@@ -1304,9 +1243,7 @@ contract ERC1155Test is DSTestPlus, ERC1155TokenReceiver {
         uint256 mintAmount,
         uint256 burnAmount,
         bytes memory mintData
-    )
-        public
-    {
+    ) public {
         burnAmount = bound(burnAmount, mintAmount + 1, type(uint256).max);
 
         token.mint(to, id, mintAmount, mintData);
@@ -1320,9 +1257,7 @@ contract ERC1155Test is DSTestPlus, ERC1155TokenReceiver {
         uint256 transferAmount,
         bytes memory mintData,
         bytes memory transferData
-    )
-        public
-    {
+    ) public {
         address from = address(0xABCD);
 
         transferAmount = bound(transferAmount, mintAmount + 1, type(uint256).max);
@@ -1342,9 +1277,7 @@ contract ERC1155Test is DSTestPlus, ERC1155TokenReceiver {
         uint256 transferAmount,
         bytes memory mintData,
         bytes memory transferData
-    )
-        public
-    {
+    ) public {
         transferAmount = bound(transferAmount, mintAmount + 1, type(uint256).max);
 
         token.mint(address(this), id, mintAmount, mintData);
@@ -1357,9 +1290,7 @@ contract ERC1155Test is DSTestPlus, ERC1155TokenReceiver {
         uint256 transferAmount,
         bytes memory mintData,
         bytes memory transferData
-    )
-        public
-    {
+    ) public {
         transferAmount = bound(transferAmount, 0, mintAmount);
 
         token.mint(address(this), id, mintAmount, mintData);
@@ -1372,9 +1303,7 @@ contract ERC1155Test is DSTestPlus, ERC1155TokenReceiver {
         uint256 transferAmount,
         bytes memory mintData,
         bytes memory transferData
-    )
-        public
-    {
+    ) public {
         transferAmount = bound(transferAmount, 0, mintAmount);
 
         token.mint(address(this), id, mintAmount, mintData);
@@ -1387,9 +1316,7 @@ contract ERC1155Test is DSTestPlus, ERC1155TokenReceiver {
         uint256 transferAmount,
         bytes memory mintData,
         bytes memory transferData
-    )
-        public
-    {
+    ) public {
         transferAmount = bound(transferAmount, 0, mintAmount);
 
         token.mint(address(this), id, mintAmount, mintData);
@@ -1404,9 +1331,7 @@ contract ERC1155Test is DSTestPlus, ERC1155TokenReceiver {
         uint256 transferAmount,
         bytes memory mintData,
         bytes memory transferData
-    )
-        public
-    {
+    ) public {
         transferAmount = bound(transferAmount, 0, mintAmount);
 
         token.mint(address(this), id, mintAmount, mintData);
@@ -1422,9 +1347,7 @@ contract ERC1155Test is DSTestPlus, ERC1155TokenReceiver {
         uint256[] memory transferAmounts,
         bytes memory mintData,
         bytes memory transferData
-    )
-        public
-    {
+    ) public {
         address from = address(0xABCD);
 
         uint256 minLength = min3(ids.length, mintAmounts.length, transferAmounts.length);
@@ -1464,9 +1387,7 @@ contract ERC1155Test is DSTestPlus, ERC1155TokenReceiver {
         uint256[] memory transferAmounts,
         bytes memory mintData,
         bytes memory transferData
-    )
-        public
-    {
+    ) public {
         address from = address(0xABCD);
 
         uint256 minLength = min3(ids.length, mintAmounts.length, transferAmounts.length);
@@ -1504,9 +1425,7 @@ contract ERC1155Test is DSTestPlus, ERC1155TokenReceiver {
         uint256[] memory transferAmounts,
         bytes memory mintData,
         bytes memory transferData
-    )
-        public
-    {
+    ) public {
         address from = address(0xABCD);
 
         uint256 minLength = min3(ids.length, mintAmounts.length, transferAmounts.length);
@@ -1546,9 +1465,7 @@ contract ERC1155Test is DSTestPlus, ERC1155TokenReceiver {
         uint256[] memory transferAmounts,
         bytes memory mintData,
         bytes memory transferData
-    )
-        public
-    {
+    ) public {
         address from = address(0xABCD);
 
         uint256 minLength = min3(ids.length, mintAmounts.length, transferAmounts.length);
@@ -1588,9 +1505,7 @@ contract ERC1155Test is DSTestPlus, ERC1155TokenReceiver {
         uint256[] memory transferAmounts,
         bytes memory mintData,
         bytes memory transferData
-    )
-        public
-    {
+    ) public {
         address from = address(0xABCD);
 
         uint256 minLength = min3(ids.length, mintAmounts.length, transferAmounts.length);
@@ -1631,9 +1546,7 @@ contract ERC1155Test is DSTestPlus, ERC1155TokenReceiver {
         uint256[] memory transferAmounts,
         bytes memory mintData,
         bytes memory transferData
-    )
-        public
-    {
+    ) public {
         address from = address(0xABCD);
 
         if (ids.length == transferAmounts.length) revert();
@@ -1672,9 +1585,7 @@ contract ERC1155Test is DSTestPlus, ERC1155TokenReceiver {
         uint256[] memory ids,
         uint256[] memory amounts,
         bytes memory mintData
-    )
-        public
-    {
+    ) public {
         NonERC1155Recipient to = new NonERC1155Recipient();
 
         uint256 minLength = min2(ids.length, amounts.length);
@@ -1702,9 +1613,7 @@ contract ERC1155Test is DSTestPlus, ERC1155TokenReceiver {
         uint256[] memory ids,
         uint256[] memory amounts,
         bytes memory mintData
-    )
-        public
-    {
+    ) public {
         RevertingERC1155Recipient to = new RevertingERC1155Recipient();
 
         uint256 minLength = min2(ids.length, amounts.length);
@@ -1732,9 +1641,7 @@ contract ERC1155Test is DSTestPlus, ERC1155TokenReceiver {
         uint256[] memory ids,
         uint256[] memory amounts,
         bytes memory mintData
-    )
-        public
-    {
+    ) public {
         WrongReturnDataERC1155Recipient to = new WrongReturnDataERC1155Recipient();
 
         uint256 minLength = min2(ids.length, amounts.length);
@@ -1763,9 +1670,7 @@ contract ERC1155Test is DSTestPlus, ERC1155TokenReceiver {
         uint256[] memory ids,
         uint256[] memory amounts,
         bytes memory mintData
-    )
-        public
-    {
+    ) public {
         if (ids.length == amounts.length) revert();
 
         token.batchMint(address(to), ids, amounts, mintData);
@@ -1777,9 +1682,7 @@ contract ERC1155Test is DSTestPlus, ERC1155TokenReceiver {
         uint256[] memory mintAmounts,
         uint256[] memory burnAmounts,
         bytes memory mintData
-    )
-        public
-    {
+    ) public {
         uint256 minLength = min3(ids.length, mintAmounts.length, burnAmounts.length);
 
         if (minLength == 0) revert();
@@ -1811,9 +1714,7 @@ contract ERC1155Test is DSTestPlus, ERC1155TokenReceiver {
         uint256[] memory mintAmounts,
         uint256[] memory burnAmounts,
         bytes memory mintData
-    )
-        public
-    {
+    ) public {
         if (ids.length == burnAmounts.length) revert();
 
         token.batchMint(to, ids, mintAmounts, mintData);
diff --git a/src/test/ERC1155_A.t.sol b/src/test/ERC1155_A.t.sol
index 4828a77..18a39a4 100644
--- a/src/test/ERC1155_A.t.sol
+++ b/src/test/ERC1155_A.t.sol
@@ -1,8 +1,8 @@
 /// SPDX-License-Identifier: Apache-2.0
-pragma solidity 0.8.21;
+pragma solidity ^0.8.19;
 
 import "forge-std/Test.sol";
-import { MockERC1155A } from "./mocks/MockERC1155A.sol";
+import {MockERC1155A} from "./mocks/MockERC1155A.sol";
 
 contract ERC1155ATest is Test {
     MockERC1155A public SuperShares;
diff --git a/src/test/Transmuter.t.sol b/src/test/Transmuter.t.sol
index e5b8673..7a793cf 100644
--- a/src/test/Transmuter.t.sol
+++ b/src/test/Transmuter.t.sol
@@ -1,11 +1,11 @@
 /// SPDX-License-Identifier: Apache-2.0
-pragma solidity 0.8.21;
+pragma solidity ^0.8.19;
 
 import "forge-std/Test.sol";
-import { MockTransmuter } from "./mocks/MockTransmuter.sol";
-import { MockERC1155A } from "./mocks/MockERC1155A.sol";
-import { ERC20 } from "solmate/tokens/ERC20.sol";
-import { sERC20 } from "../transmuter/sERC20.sol";
+import {MockTransmuter} from "./mocks/MockTransmuter.sol";
+import {MockERC1155A} from "./mocks/MockERC1155A.sol";
+import {ERC20} from "solmate/tokens/ERC20.sol";
+import {sERC20} from "../transmuter/sERC20.sol";
 
 contract TransmuterTest is Test {
     uint256 public constant THOUSAND_E18 = 1000 ether;
diff --git a/src/test/mocks/MockERC1155A.sol b/src/test/mocks/MockERC1155A.sol
index 36c07c9..7394bca 100644
--- a/src/test/mocks/MockERC1155A.sol
+++ b/src/test/mocks/MockERC1155A.sol
@@ -1,8 +1,8 @@
 /// SPDX-License-Identifier: Apache-2.0
-pragma solidity 0.8.21;
+pragma solidity ^0.8.19;
 
-import { ERC1155A } from "../../ERC1155A.sol";
-import { Strings } from "openzeppelin-contracts/contracts/utils/Strings.sol";
+import {ERC1155A} from "../../ERC1155A.sol";
+import {Strings} from "openzeppelin-contracts/contracts/utils/Strings.sol";
 
 /// @notice For test purpouses we open mint()/burn() functions of ERC1155A
 contract MockERC1155A is ERC1155A {
diff --git a/src/test/mocks/MockTransmuter.sol b/src/test/mocks/MockTransmuter.sol
index ff96beb..264e0a4 100644
--- a/src/test/mocks/MockTransmuter.sol
+++ b/src/test/mocks/MockTransmuter.sol
@@ -1,9 +1,9 @@
 /// SPDX-License-Identifier: Apache-2.0
-pragma solidity 0.8.21;
+pragma solidity ^0.8.19;
 
-import { IERC1155A } from "../../interfaces/IERC1155A.sol";
-import { Transmuter } from "../../transmuter/Transmuter.sol";
-import { sERC20 } from "../../transmuter/sERC20.sol";
+import {IERC1155A} from "../../interfaces/IERC1155A.sol";
+import {Transmuter} from "../../transmuter/Transmuter.sol";
+import {sERC20} from "../../transmuter/sERC20.sol";
 
 /// @notice For test purpouses we open mint()/burn() functions of ERC1155s
 contract MockTransmuter is Transmuter {
@@ -15,12 +15,7 @@ contract MockTransmuter is Transmuter {
         deployer = deployer_;
     }
 
-    function registerTransmuter(
-        uint256 id,
-        string memory name,
-        string memory symbol,
-        uint8 decimals
-    )
+    function registerTransmuter(uint256 id, string memory name, string memory symbol, uint8 decimals)
         external
         override
         returns (address)
diff --git a/src/transmuter/Transmuter.sol b/src/transmuter/Transmuter.sol
index 4cb40b2..77cb5c5 100644
--- a/src/transmuter/Transmuter.sol
+++ b/src/transmuter/Transmuter.sol
@@ -1,9 +1,9 @@
 /// SPDX-License-Identifier: Apache-2.0
-pragma solidity 0.8.21;
+pragma solidity ^0.8.19;
 
-import { IERC1155A } from "../interfaces/IERC1155A.sol";
-import { sERC20 } from "./sERC20.sol";
-import { ITransmuter } from "../interfaces/ITransmuter.sol";
+import {IERC1155A} from "../interfaces/IERC1155A.sol";
+import {sERC20} from "./sERC20.sol";
+import {ITransmuter} from "../interfaces/ITransmuter.sol";
 
 /// @title Transmuter
 /// @author Zeropoint Labs.
@@ -24,12 +24,7 @@ abstract contract Transmuter is ITransmuter {
     }
 
     /// @inheritdoc ITransmuter
-    function registerTransmuter(
-        uint256 id,
-        string memory name,
-        string memory symbol,
-        uint8 decimals
-    )
+    function registerTransmuter(uint256 id, string memory name, string memory symbol, uint8 decimals)
         external
         virtual
         override
@@ -106,11 +101,7 @@ abstract contract Transmuter is ITransmuter {
         uint256, /*id*/
         uint256, /*value*/
         bytes calldata /*data*/
-    )
-        external
-        pure
-        returns (bytes4)
-    {
+    ) external pure returns (bytes4) {
         return this.onERC1155Received.selector;
     }
 
@@ -120,11 +111,7 @@ abstract contract Transmuter is ITransmuter {
         uint256[] calldata, /*ids*/
         uint256[] calldata, /*values*/
         bytes calldata /*data*/
-    )
-        external
-        pure
-        returns (bytes4)
-    {
+    ) external pure returns (bytes4) {
         return this.onERC1155BatchReceived.selector;
     }
 }
diff --git a/src/transmuter/sERC20.sol b/src/transmuter/sERC20.sol
index 2b50e20..903989c 100644
--- a/src/transmuter/sERC20.sol
+++ b/src/transmuter/sERC20.sol
@@ -1,7 +1,7 @@
 /// SPDX-License-Identifier: Apache-2.0
-pragma solidity 0.8.21;
+pragma solidity ^0.8.19;
 
-import { ERC20 } from "solmate/tokens/ERC20.sol";
+import {ERC20} from "solmate/tokens/ERC20.sol";
 
 /// @title sERC20
 /// @author Zeropoint Labs.