diff --git a/script/universal/IGnosisSafe.sol b/script/universal/IGnosisSafe.sol
new file mode 100644
index 0000000..fae736a
--- /dev/null
+++ b/script/universal/IGnosisSafe.sol
@@ -0,0 +1,117 @@
+// SPDX-License-Identifier: LGPL-3.0-only
+pragma solidity ^0.8.10;
+
+/// @title Enum - Collection of enums used in Safe contracts.
+/// @author Richard Meissner - @rmeissner
+abstract contract Enum {
+    enum Operation {
+        Call,
+        DelegateCall
+    }
+}
+
+/// @title IGnosisSafe - Gnosis Safe Interface
+interface IGnosisSafe {
+    event AddedOwner(address owner);
+    event ApproveHash(bytes32 indexed approvedHash, address indexed owner);
+    event ChangedFallbackHandler(address handler);
+    event ChangedGuard(address guard);
+    event ChangedThreshold(uint256 threshold);
+    event DisabledModule(address module);
+    event EnabledModule(address module);
+    event ExecutionFailure(bytes32 txHash, uint256 payment);
+    event ExecutionFromModuleFailure(address indexed module);
+    event ExecutionFromModuleSuccess(address indexed module);
+    event ExecutionSuccess(bytes32 txHash, uint256 payment);
+    event RemovedOwner(address owner);
+    event SafeReceived(address indexed sender, uint256 value);
+    event SafeSetup(
+        address indexed initiator, address[] owners, uint256 threshold, address initializer, address fallbackHandler
+    );
+    event SignMsg(bytes32 indexed msgHash);
+
+    function VERSION() external view returns (string memory);
+    function addOwnerWithThreshold(address owner, uint256 _threshold) external;
+    function approveHash(bytes32 hashToApprove) external;
+    function approvedHashes(address, bytes32) external view returns (uint256);
+    function changeThreshold(uint256 _threshold) external;
+    function checkNSignatures(bytes32 dataHash, bytes memory data, bytes memory signatures, uint256 requiredSignatures)
+        external
+        view;
+    function checkSignatures(bytes32 dataHash, bytes memory data, bytes memory signatures) external view;
+    function disableModule(address prevModule, address module) external;
+    function domainSeparator() external view returns (bytes32);
+    function enableModule(address module) external;
+    function encodeTransactionData(
+        address to,
+        uint256 value,
+        bytes memory data,
+        Enum.Operation operation,
+        uint256 safeTxGas,
+        uint256 baseGas,
+        uint256 gasPrice,
+        address gasToken,
+        address refundReceiver,
+        uint256 _nonce
+    ) external view returns (bytes memory);
+    function execTransaction(
+        address to,
+        uint256 value,
+        bytes memory data,
+        Enum.Operation operation,
+        uint256 safeTxGas,
+        uint256 baseGas,
+        uint256 gasPrice,
+        address gasToken,
+        address refundReceiver,
+        bytes memory signatures
+    ) external payable returns (bool success);
+    function execTransactionFromModule(address to, uint256 value, bytes memory data, Enum.Operation operation)
+        external
+        returns (bool success);
+    function execTransactionFromModuleReturnData(address to, uint256 value, bytes memory data, Enum.Operation operation)
+        external
+        returns (bool success, bytes memory returnData);
+    function getChainId() external view returns (uint256);
+    function getModulesPaginated(address start, uint256 pageSize)
+        external
+        view
+        returns (address[] memory array, address next);
+    function getOwners() external view returns (address[] memory);
+    function getStorageAt(uint256 offset, uint256 length) external view returns (bytes memory);
+    function getThreshold() external view returns (uint256);
+    function getTransactionHash(
+        address to,
+        uint256 value,
+        bytes memory data,
+        Enum.Operation operation,
+        uint256 safeTxGas,
+        uint256 baseGas,
+        uint256 gasPrice,
+        address gasToken,
+        address refundReceiver,
+        uint256 _nonce
+    ) external view returns (bytes32);
+    function isModuleEnabled(address module) external view returns (bool);
+    function isOwner(address owner) external view returns (bool);
+    function nonce() external view returns (uint256);
+    function removeOwner(address prevOwner, address owner, uint256 _threshold) external;
+    function requiredTxGas(address to, uint256 value, bytes memory data, Enum.Operation operation)
+        external
+        returns (uint256);
+    function setFallbackHandler(address handler) external;
+    function setGuard(address guard) external;
+    function setup(
+        address[] memory _owners,
+        uint256 _threshold,
+        address to,
+        bytes memory data,
+        address fallbackHandler,
+        address paymentToken,
+        uint256 payment,
+        address paymentReceiver
+    ) external;
+    function signedMessages(bytes32) external view returns (uint256);
+    function simulateAndRevert(address targetContract, bytes memory calldataPayload) external;
+    function swapOwner(address prevOwner, address oldOwner, address newOwner) external;
+}
diff --git a/script/universal/MultisigBase.sol b/script/universal/MultisigBase.sol
index 4b12468..1454a58 100644
--- a/script/universal/MultisigBase.sol
+++ b/script/universal/MultisigBase.sol
@@ -5,7 +5,7 @@ import {Vm} from "forge-std/Vm.sol";
 import {console} from "forge-std/console.sol";
 import {CommonBase} from "forge-std/Base.sol";
 import {IMulticall3} from "forge-std/interfaces/IMulticall3.sol";
-import {IGnosisSafe, Enum} from "@eth-optimism-bedrock/scripts/interfaces/IGnosisSafe.sol";
+import {IGnosisSafe, Enum} from "./IGnosisSafe.sol";
 import {Simulation} from "./Simulation.sol";
 import {Signatures} from "./Signatures.sol";
 
diff --git a/script/universal/Signatures.sol b/script/universal/Signatures.sol
index 4994ee5..42efd0b 100644
--- a/script/universal/Signatures.sol
+++ b/script/universal/Signatures.sol
@@ -3,7 +3,7 @@ pragma solidity ^0.8.15;
 
 import {Bytes} from "@eth-optimism-bedrock/src/libraries/Bytes.sol";
 import {LibSort} from "@solady/utils/LibSort.sol";
-import {IGnosisSafe} from "@eth-optimism-bedrock/scripts/interfaces/IGnosisSafe.sol";
+import {IGnosisSafe} from "./IGnosisSafe.sol";
 
 library Signatures {
     function prepareSignatures(address _safe, bytes32 hash, bytes memory _signatures)
diff --git a/script/universal/Simulation.sol b/script/universal/Simulation.sol
index b5e2221..b88f04b 100644
--- a/script/universal/Simulation.sol
+++ b/script/universal/Simulation.sol
@@ -3,7 +3,7 @@ pragma solidity ^0.8.15;
 
 import {console} from "forge-std/console.sol";
 import {Vm} from "forge-std/Vm.sol";
-import {IGnosisSafe} from "@eth-optimism-bedrock/scripts/interfaces/IGnosisSafe.sol";
+import {IGnosisSafe} from "./IGnosisSafe.sol";
 
 library Simulation {
     address internal constant VM_ADDRESS = address(uint160(uint256(keccak256("hevm cheat code"))));
diff --git a/test/universal/MultisigBuilder.t.sol b/test/universal/MultisigBuilder.t.sol
index de63a08..d56fee0 100644
--- a/test/universal/MultisigBuilder.t.sol
+++ b/test/universal/MultisigBuilder.t.sol
@@ -8,7 +8,7 @@ import {IMulticall3} from "forge-std/interfaces/IMulticall3.sol";
 import {Preinstalls} from "@eth-optimism-bedrock/src/libraries/Preinstalls.sol";
 import {MultisigBuilder} from "../../script/universal/MultisigBuilder.sol";
 import {Simulation} from "../../script/universal/Simulation.sol";
-import {IGnosisSafe} from "@eth-optimism-bedrock/scripts/interfaces/IGnosisSafe.sol";
+import {IGnosisSafe} from "../../script/universal/IGnosisSafe.sol";
 import {Counter} from "./Counter.sol";
 
 contract MultisigBuilderTest is Test, MultisigBuilder {
diff --git a/test/universal/NestedMultisigBuilder.t.sol b/test/universal/NestedMultisigBuilder.t.sol
index 306a310..98d70bb 100644
--- a/test/universal/NestedMultisigBuilder.t.sol
+++ b/test/universal/NestedMultisigBuilder.t.sol
@@ -8,7 +8,7 @@ import {IMulticall3} from "forge-std/interfaces/IMulticall3.sol";
 import {Preinstalls} from "@eth-optimism-bedrock/src/libraries/Preinstalls.sol";
 import {NestedMultisigBuilder} from "../../script/universal/NestedMultisigBuilder.sol";
 import {Simulation} from "../../script/universal/Simulation.sol";
-import {IGnosisSafe} from "@eth-optimism-bedrock/scripts/interfaces/IGnosisSafe.sol";
+import {IGnosisSafe} from "../../script/universal/IGnosisSafe.sol";
 import {Counter} from "./Counter.sol";
 
 contract NestedMultisigBuilderTest is Test, NestedMultisigBuilder {