diff --git a/src/_global/swapUtils.sol b/src/_global/swapUtils.sol
index 1528181..0b6ffa0 100644
--- a/src/_global/swapUtils.sol
+++ b/src/_global/swapUtils.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-pragma solidity 0.8.21;
+pragma solidity ^0.8.19;
 
 import { SafeTransferLib } from "solmate/utils/SafeTransferLib.sol";
 import { ERC20 } from "solmate/tokens/ERC20.sol";
diff --git a/src/aave-v2/AaveV2ERC4626Reinvest.sol b/src/aave-v2/AaveV2ERC4626Reinvest.sol
index 9141516..fba49ff 100644
--- a/src/aave-v2/AaveV2ERC4626Reinvest.sol
+++ b/src/aave-v2/AaveV2ERC4626Reinvest.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-pragma solidity 0.8.21;
+pragma solidity ^0.8.19;
 
 import { ERC20 } from "solmate/tokens/ERC20.sol";
 import { ERC4626 } from "solmate/mixins/ERC4626.sol";
diff --git a/src/aave-v2/AaveV2ERC4626ReinvestFactory.sol b/src/aave-v2/AaveV2ERC4626ReinvestFactory.sol
index 5a10489..3d87e88 100644
--- a/src/aave-v2/AaveV2ERC4626ReinvestFactory.sol
+++ b/src/aave-v2/AaveV2ERC4626ReinvestFactory.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-pragma solidity 0.8.21;
+pragma solidity ^0.8.19;
 
 import { ERC20 } from "solmate/tokens/ERC20.sol";
 import { ERC4626 } from "solmate/mixins/ERC4626.sol";
diff --git a/src/aave-v2/AaveV2ERC4626ReinvestIncentive.sol b/src/aave-v2/AaveV2ERC4626ReinvestIncentive.sol
index ea85b8b..2a118e4 100644
--- a/src/aave-v2/AaveV2ERC4626ReinvestIncentive.sol
+++ b/src/aave-v2/AaveV2ERC4626ReinvestIncentive.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-pragma solidity 0.8.21;
+pragma solidity ^0.8.19;
 
 import { ERC20 } from "solmate/tokens/ERC20.sol";
 import { ERC4626 } from "solmate/mixins/ERC4626.sol";
diff --git a/src/aave-v2/AaveV2ERC4626ReinvestIncentiveFactory.sol b/src/aave-v2/AaveV2ERC4626ReinvestIncentiveFactory.sol
index 171b9c2..fd58761 100644
--- a/src/aave-v2/AaveV2ERC4626ReinvestIncentiveFactory.sol
+++ b/src/aave-v2/AaveV2ERC4626ReinvestIncentiveFactory.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-pragma solidity 0.8.21;
+pragma solidity ^0.8.19;
 
 import { ERC20 } from "solmate/tokens/ERC20.sol";
 import { ERC4626 } from "solmate/mixins/ERC4626.sol";
diff --git a/src/aave-v2/aave/IAaveMining.sol b/src/aave-v2/aave/IAaveMining.sol
index c14a645..f013403 100644
--- a/src/aave-v2/aave/IAaveMining.sol
+++ b/src/aave-v2/aave/IAaveMining.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-pragma solidity 0.8.21;
+pragma solidity ^0.8.19;
 
 interface IAaveMining {
     function claimRewards(address[] calldata assets, uint256 amount, address to) external returns (uint256);
diff --git a/src/aave-v2/aave/ILendingPool.sol b/src/aave-v2/aave/ILendingPool.sol
index e18dbbf..f34de63 100644
--- a/src/aave-v2/aave/ILendingPool.sol
+++ b/src/aave-v2/aave/ILendingPool.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-pragma solidity 0.8.21;
+pragma solidity ^0.8.19;
 
 // Aave lending pool interface
 // Documentation: https://docs.aave.com/developers/the-core-protocol/lendingpool/ilendingpool
diff --git a/src/aave-v2/test/AaveV2ERC4626Reinvest.t.sol b/src/aave-v2/test/AaveV2ERC4626Reinvest.t.sol
index 8ecc59e..effeca9 100644
--- a/src/aave-v2/test/AaveV2ERC4626Reinvest.t.sol
+++ b/src/aave-v2/test/AaveV2ERC4626Reinvest.t.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-pragma solidity 0.8.21;
+pragma solidity ^0.8.19;
 
 import "forge-std/Test.sol";
 import { ERC20 } from "solmate/tokens/ERC20.sol";
diff --git a/src/aave-v2/utils/ISwapRouter.sol b/src/aave-v2/utils/ISwapRouter.sol
index b6dcf5b..d4a8e6b 100644
--- a/src/aave-v2/utils/ISwapRouter.sol
+++ b/src/aave-v2/utils/ISwapRouter.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: GPL-2.0-or-later
-pragma solidity 0.8.21;
+pragma solidity ^0.8.19;
 pragma abicoder v2;
 
 import "./IUniswapV3SwapCallback.sol";
diff --git a/src/aave-v2/utils/IUniswapV3SwapCallback.sol b/src/aave-v2/utils/IUniswapV3SwapCallback.sol
index 34d2d5f..a1b7b6d 100644
--- a/src/aave-v2/utils/IUniswapV3SwapCallback.sol
+++ b/src/aave-v2/utils/IUniswapV3SwapCallback.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: GPL-2.0-or-later
-pragma solidity 0.8.21;
+pragma solidity ^0.8.19;
 
 /// @title Callback for IUniswapV3PoolActions#swap
 /// @notice Any contract that calls IUniswapV3PoolActions#swap must implement this interface
diff --git a/src/aave-v3/AaveV3ERC4626Reinvest.sol b/src/aave-v3/AaveV3ERC4626Reinvest.sol
index b1a4978..1e3627d 100644
--- a/src/aave-v3/AaveV3ERC4626Reinvest.sol
+++ b/src/aave-v3/AaveV3ERC4626Reinvest.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-pragma solidity 0.8.21;
+pragma solidity ^0.8.19;
 
 import { ERC20 } from "solmate/tokens/ERC20.sol";
 import { ERC4626 } from "solmate/mixins/ERC4626.sol";
diff --git a/src/aave-v3/AaveV3ERC4626ReinvestFactory.sol b/src/aave-v3/AaveV3ERC4626ReinvestFactory.sol
index a52520f..880bd4f 100644
--- a/src/aave-v3/AaveV3ERC4626ReinvestFactory.sol
+++ b/src/aave-v3/AaveV3ERC4626ReinvestFactory.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-pragma solidity 0.8.21;
+pragma solidity ^0.8.19;
 
 import { ERC20 } from "solmate/tokens/ERC20.sol";
 import { ERC4626 } from "solmate/mixins/ERC4626.sol";
diff --git a/src/aave-v3/AaveV3ERC4626ReinvestIncentive.sol b/src/aave-v3/AaveV3ERC4626ReinvestIncentive.sol
index 8a85e32..1481cf8 100644
--- a/src/aave-v3/AaveV3ERC4626ReinvestIncentive.sol
+++ b/src/aave-v3/AaveV3ERC4626ReinvestIncentive.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-pragma solidity 0.8.21;
+pragma solidity ^0.8.19;
 
 import { ERC20 } from "solmate/tokens/ERC20.sol";
 import { ERC4626 } from "solmate/mixins/ERC4626.sol";
diff --git a/src/aave-v3/AaveV3ERC4626ReinvestIncentiveFactory.sol b/src/aave-v3/AaveV3ERC4626ReinvestIncentiveFactory.sol
index b17bca4..a2ca550 100644
--- a/src/aave-v3/AaveV3ERC4626ReinvestIncentiveFactory.sol
+++ b/src/aave-v3/AaveV3ERC4626ReinvestIncentiveFactory.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-pragma solidity 0.8.21;
+pragma solidity ^0.8.19;
 
 import { ERC20 } from "solmate/tokens/ERC20.sol";
 import { ERC4626 } from "solmate/mixins/ERC4626.sol";
diff --git a/src/aave-v3/AaveV3ERC4626ReinvestUni.sol b/src/aave-v3/AaveV3ERC4626ReinvestUni.sol
index 3b679ff..8ad14b8 100644
--- a/src/aave-v3/AaveV3ERC4626ReinvestUni.sol
+++ b/src/aave-v3/AaveV3ERC4626ReinvestUni.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-pragma solidity 0.8.21;
+pragma solidity ^0.8.19;
 
 import { ERC20 } from "solmate/tokens/ERC20.sol";
 import { ERC4626 } from "solmate/mixins/ERC4626.sol";
diff --git a/src/aave-v3/AaveV3ERC4626ReinvestUniFactory.sol b/src/aave-v3/AaveV3ERC4626ReinvestUniFactory.sol
index 2adefc2..b7d2f39 100644
--- a/src/aave-v3/AaveV3ERC4626ReinvestUniFactory.sol
+++ b/src/aave-v3/AaveV3ERC4626ReinvestUniFactory.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-pragma solidity 0.8.21;
+pragma solidity ^0.8.19;
 
 import { ERC20 } from "solmate/tokens/ERC20.sol";
 import { ERC4626 } from "solmate/mixins/ERC4626.sol";
diff --git a/src/aave-v3/external/IPool.sol b/src/aave-v3/external/IPool.sol
index 8cad1d0..c6123ec 100644
--- a/src/aave-v3/external/IPool.sol
+++ b/src/aave-v3/external/IPool.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-pragma solidity 0.8.21;
+pragma solidity ^0.8.19;
 
 /**
  * @title IPool
diff --git a/src/aave-v3/external/IRewardsController.sol b/src/aave-v3/external/IRewardsController.sol
index d6bc44e..bbe898c 100644
--- a/src/aave-v3/external/IRewardsController.sol
+++ b/src/aave-v3/external/IRewardsController.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-pragma solidity 0.8.21;
+pragma solidity ^0.8.19;
 
 /**
  * @title IRewardsController
diff --git a/src/aave-v3/test/AaveV3ERC4626Reinvest.t.sol b/src/aave-v3/test/AaveV3ERC4626Reinvest.t.sol
index 39b3210..f4f948e 100644
--- a/src/aave-v3/test/AaveV3ERC4626Reinvest.t.sol
+++ b/src/aave-v3/test/AaveV3ERC4626Reinvest.t.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-pragma solidity 0.8.21;
+pragma solidity ^0.8.19;
 
 import "forge-std/Test.sol";
 import { ERC20 } from "solmate/tokens/ERC20.sol";
diff --git a/src/aave-v3/test/AaveV3ERC4626ReinvestIncentive.t.sol b/src/aave-v3/test/AaveV3ERC4626ReinvestIncentive.t.sol
index bcd69af..f81f789 100644
--- a/src/aave-v3/test/AaveV3ERC4626ReinvestIncentive.t.sol
+++ b/src/aave-v3/test/AaveV3ERC4626ReinvestIncentive.t.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-pragma solidity 0.8.21;
+pragma solidity ^0.8.19;
 
 import "forge-std/Test.sol";
 import { ERC20 } from "solmate/tokens/ERC20.sol";
diff --git a/src/aave-v3/test/AaveV3ERC4626ReinvestUni.t.sol b/src/aave-v3/test/AaveV3ERC4626ReinvestUni.t.sol
index 86ec3b0..c7d12c6 100644
--- a/src/aave-v3/test/AaveV3ERC4626ReinvestUni.t.sol
+++ b/src/aave-v3/test/AaveV3ERC4626ReinvestUni.t.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-pragma solidity 0.8.21;
+pragma solidity ^0.8.19;
 
 import "forge-std/Test.sol";
 import { ERC20 } from "solmate/tokens/ERC20.sol";
diff --git a/src/alpaca/AlpacaERC4626Reinvest.sol b/src/alpaca/AlpacaERC4626Reinvest.sol
index f9901ec..479819b 100644
--- a/src/alpaca/AlpacaERC4626Reinvest.sol
+++ b/src/alpaca/AlpacaERC4626Reinvest.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-pragma solidity 0.8.21;
+pragma solidity ^0.8.19;
 
 import { ERC20 } from "solmate/tokens/ERC20.sol";
 import { ERC4626 } from "solmate/mixins/ERC4626.sol";
diff --git a/src/alpaca/interfaces/IBToken.sol b/src/alpaca/interfaces/IBToken.sol
index fbec49c..9d1e974 100644
--- a/src/alpaca/interfaces/IBToken.sol
+++ b/src/alpaca/interfaces/IBToken.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-pragma solidity 0.8.21;
+pragma solidity ^0.8.19;
 
 interface IBToken {
     function deposit(uint256) external payable;
diff --git a/src/alpaca/interfaces/IFairLaunch.sol b/src/alpaca/interfaces/IFairLaunch.sol
index 41e2b9b..d5a7c7a 100644
--- a/src/alpaca/interfaces/IFairLaunch.sol
+++ b/src/alpaca/interfaces/IFairLaunch.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-pragma solidity 0.8.21;
+pragma solidity ^0.8.19;
 
 interface IFairLaunch {
     function alpacaPerBlock() external view returns (uint256);
diff --git a/src/alpaca/interfaces/IRewardsCore.sol b/src/alpaca/interfaces/IRewardsCore.sol
index 7367bb3..45fee4c 100644
--- a/src/alpaca/interfaces/IRewardsCore.sol
+++ b/src/alpaca/interfaces/IRewardsCore.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-pragma solidity 0.8.21;
+pragma solidity ^0.8.19;
 
 interface IRewardsCore {
     function claimRewards(address, address, bytes memory) external;
diff --git a/src/alpaca/interfaces/IVaultConfig.sol b/src/alpaca/interfaces/IVaultConfig.sol
index be81592..2a3e17f 100644
--- a/src/alpaca/interfaces/IVaultConfig.sol
+++ b/src/alpaca/interfaces/IVaultConfig.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-pragma solidity 0.8.21;
+pragma solidity ^0.8.19;
 
 interface IVaultConfig {
     /// @dev Return the bps rate for reserve pool.
diff --git a/src/alpaca/interfaces/WrappedNative.sol b/src/alpaca/interfaces/WrappedNative.sol
index d8e5716..45e8128 100644
--- a/src/alpaca/interfaces/WrappedNative.sol
+++ b/src/alpaca/interfaces/WrappedNative.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-pragma solidity 0.8.21;
+pragma solidity ^0.8.19;
 
 interface WrappedNative {
     function deposit() external payable;
diff --git a/src/alpaca/test/AlpacaERC4626Reinvest.t.sol b/src/alpaca/test/AlpacaERC4626Reinvest.t.sol
index d6db2e0..2070bed 100644
--- a/src/alpaca/test/AlpacaERC4626Reinvest.t.sol
+++ b/src/alpaca/test/AlpacaERC4626Reinvest.t.sol
@@ -1,5 +1,5 @@
 /// SPDX-License-Identifier: Apache-2.0
-pragma solidity 0.8.21;
+pragma solidity ^0.8.19;
 
 import "forge-std/Test.sol";
 import { ERC20 } from "solmate/tokens/ERC20.sol";
diff --git a/src/arrakis/Arrakis_Factory.sol b/src/arrakis/Arrakis_Factory.sol
index 82a8de3..07d6f77 100644
--- a/src/arrakis/Arrakis_Factory.sol
+++ b/src/arrakis/Arrakis_Factory.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-pragma solidity 0.8.21;
+pragma solidity ^0.8.19;
 
 import { ERC20 } from "solmate/tokens/ERC20.sol";
 import { ERC4626 } from "solmate/mixins/ERC4626.sol";
diff --git a/src/arrakis/Arrakis_Non_Native_LP_Vault.sol b/src/arrakis/Arrakis_Non_Native_LP_Vault.sol
index f68d58c..b4776a9 100644
--- a/src/arrakis/Arrakis_Non_Native_LP_Vault.sol
+++ b/src/arrakis/Arrakis_Non_Native_LP_Vault.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-pragma solidity 0.8.21;
+pragma solidity ^0.8.19;
 
 import { ERC4626 } from "solmate/mixins/ERC4626.sol";
 import { ERC20 } from "solmate/tokens/ERC20.sol";
diff --git a/src/arrakis/interfaces/IArrakisRouter.sol b/src/arrakis/interfaces/IArrakisRouter.sol
index 03aaf1e..b358393 100644
--- a/src/arrakis/interfaces/IArrakisRouter.sol
+++ b/src/arrakis/interfaces/IArrakisRouter.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-pragma solidity 0.8.21;
+pragma solidity ^0.8.19;
 
 import { IGauge } from "./IGauge.sol";
 
diff --git a/src/arrakis/interfaces/IGauge.sol b/src/arrakis/interfaces/IGauge.sol
index 4ef8a8a..51668fc 100644
--- a/src/arrakis/interfaces/IGauge.sol
+++ b/src/arrakis/interfaces/IGauge.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-pragma solidity 0.8.21;
+pragma solidity ^0.8.19;
 
 interface IGauge {
     function withdraw(uint256 amount) external;
diff --git a/src/arrakis/interfaces/IStakePool.sol b/src/arrakis/interfaces/IStakePool.sol
index 71a38c0..3446995 100644
--- a/src/arrakis/interfaces/IStakePool.sol
+++ b/src/arrakis/interfaces/IStakePool.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-pragma solidity 0.8.21;
+pragma solidity ^0.8.19;
 
 interface IStakePool {
     function staking_token() external view returns (address);
diff --git a/src/arrakis/utils/IWETH.sol b/src/arrakis/utils/IWETH.sol
index c2aafd1..6c89fd8 100644
--- a/src/arrakis/utils/IWETH.sol
+++ b/src/arrakis/utils/IWETH.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-pragma solidity 0.8.21;
+pragma solidity ^0.8.19;
 
 interface IWETH {
     function balanceOf(address) external view returns (uint256);
diff --git a/src/benqi/BenqiERC4626Reinvest.sol b/src/benqi/BenqiERC4626Reinvest.sol
index b14a535..4341474 100644
--- a/src/benqi/BenqiERC4626Reinvest.sol
+++ b/src/benqi/BenqiERC4626Reinvest.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-pragma solidity 0.8.21;
+pragma solidity ^0.8.19;
 
 import { ERC20 } from "solmate/tokens/ERC20.sol";
 import { ERC4626 } from "solmate/mixins/ERC4626.sol";
diff --git a/src/benqi/BenqiERC4626Staking.sol b/src/benqi/BenqiERC4626Staking.sol
index ffd1574..e21bdc1 100644
--- a/src/benqi/BenqiERC4626Staking.sol
+++ b/src/benqi/BenqiERC4626Staking.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-pragma solidity 0.8.21;
+pragma solidity ^0.8.19;
 
 import { ERC20 } from "solmate/tokens/ERC20.sol";
 import { ERC4626 } from "solmate/mixins/ERC4626.sol";
diff --git a/src/benqi/BenqiNativeERC4626Reinvest.sol b/src/benqi/BenqiNativeERC4626Reinvest.sol
index 6e3360c..d290edf 100644
--- a/src/benqi/BenqiNativeERC4626Reinvest.sol
+++ b/src/benqi/BenqiNativeERC4626Reinvest.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-pragma solidity 0.8.21;
+pragma solidity ^0.8.19;
 
 import { ERC20 } from "solmate/tokens/ERC20.sol";
 import { ERC4626 } from "solmate/mixins/ERC4626.sol";
diff --git a/src/benqi/external/IBComptroller.sol b/src/benqi/external/IBComptroller.sol
index 8893ce1..6c8501c 100644
--- a/src/benqi/external/IBComptroller.sol
+++ b/src/benqi/external/IBComptroller.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-pragma solidity 0.8.21;
+pragma solidity ^0.8.19;
 
 interface IBComptroller {
     function qiAddress() external view returns (address);
diff --git a/src/benqi/external/IBERC20.sol b/src/benqi/external/IBERC20.sol
index 7044643..f31e860 100644
--- a/src/benqi/external/IBERC20.sol
+++ b/src/benqi/external/IBERC20.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-pragma solidity 0.8.21;
+pragma solidity ^0.8.19;
 
 import { ERC20 } from "solmate/tokens/ERC20.sol";
 
diff --git a/src/benqi/external/IBEther.sol b/src/benqi/external/IBEther.sol
index ee567fb..ea442c8 100644
--- a/src/benqi/external/IBEther.sol
+++ b/src/benqi/external/IBEther.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-pragma solidity 0.8.21;
+pragma solidity ^0.8.19;
 
 import { ERC20 } from "solmate/tokens/ERC20.sol";
 
diff --git a/src/benqi/external/IBInterestRateModel.sol b/src/benqi/external/IBInterestRateModel.sol
index badee47..f7ee58c 100644
--- a/src/benqi/external/IBInterestRateModel.sol
+++ b/src/benqi/external/IBInterestRateModel.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-pragma solidity 0.8.21;
+pragma solidity ^0.8.19;
 
 interface IBInterestRateModel {
     function getBorrowRate(uint256, uint256, uint256) external view returns (uint256);
diff --git a/src/benqi/external/LibBCompound.sol b/src/benqi/external/LibBCompound.sol
index 59ffe43..fc21b40 100644
--- a/src/benqi/external/LibBCompound.sol
+++ b/src/benqi/external/LibBCompound.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-pragma solidity 0.8.21;
+pragma solidity ^0.8.19;
 
 import { FixedPointMathLib } from "solmate/utils/FixedPointMathLib.sol";
 
diff --git a/src/benqi/interfaces/IStakedAvax.sol b/src/benqi/interfaces/IStakedAvax.sol
index 0e3e7b6..4f74f7d 100644
--- a/src/benqi/interfaces/IStakedAvax.sol
+++ b/src/benqi/interfaces/IStakedAvax.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-pragma solidity 0.8.21;
+pragma solidity ^0.8.19;
 
 interface IStakedAvax {
     function getSharesByPooledAvax(uint256 avaxAmount) external view returns (uint256);
diff --git a/src/benqi/test/BenqiERC4626Reinvest.t.sol b/src/benqi/test/BenqiERC4626Reinvest.t.sol
index 212a415..920a43d 100644
--- a/src/benqi/test/BenqiERC4626Reinvest.t.sol
+++ b/src/benqi/test/BenqiERC4626Reinvest.t.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-pragma solidity 0.8.21;
+pragma solidity ^0.8.19;
 
 import "forge-std/Test.sol";
 import { ERC20 } from "solmate/tokens/ERC20.sol";
diff --git a/src/benqi/test/BenqiERC4626Staking.t.sol b/src/benqi/test/BenqiERC4626Staking.t.sol
index 5b5754d..4a81025 100644
--- a/src/benqi/test/BenqiERC4626Staking.t.sol
+++ b/src/benqi/test/BenqiERC4626Staking.t.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-pragma solidity 0.8.21;
+pragma solidity ^0.8.19;
 
 import "forge-std/Test.sol";
 import "forge-std/console.sol";
diff --git a/src/benqi/test/BenqiNativeERC4626Reinvest.t.sol b/src/benqi/test/BenqiNativeERC4626Reinvest.t.sol
index 4e57bdc..72bada0 100644
--- a/src/benqi/test/BenqiNativeERC4626Reinvest.t.sol
+++ b/src/benqi/test/BenqiNativeERC4626Reinvest.t.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-pragma solidity 0.8.21;
+pragma solidity ^0.8.19;
 
 import "forge-std/Test.sol";
 import { ERC20 } from "solmate/tokens/ERC20.sol";
diff --git a/src/benqi/utils/wrappedNative.sol b/src/benqi/utils/wrappedNative.sol
index 5c0d615..991ed3f 100644
--- a/src/benqi/utils/wrappedNative.sol
+++ b/src/benqi/utils/wrappedNative.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-pragma solidity 0.8.21;
+pragma solidity ^0.8.19;
 
 interface WrappedNative {
     function deposit() external payable;
diff --git a/src/compound/CompoundV2ERC4626Wrapper.sol b/src/compound/CompoundV2ERC4626Wrapper.sol
index 76e8a5a..a8a65c5 100644
--- a/src/compound/CompoundV2ERC4626Wrapper.sol
+++ b/src/compound/CompoundV2ERC4626Wrapper.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-pragma solidity 0.8.21;
+pragma solidity ^0.8.19;
 
 import { ERC20 } from "solmate/tokens/ERC20.sol";
 import { ERC4626 } from "solmate/mixins/ERC4626.sol";
diff --git a/src/compound/CompoundV3ERC4626Wrapper.sol b/src/compound/CompoundV3ERC4626Wrapper.sol
index 1a859fb..514bf5e 100644
--- a/src/compound/CompoundV3ERC4626Wrapper.sol
+++ b/src/compound/CompoundV3ERC4626Wrapper.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-pragma solidity 0.8.21;
+pragma solidity ^0.8.19;
 
 import { ERC20 } from "solmate/tokens/ERC20.sol";
 import { ERC4626 } from "solmate/mixins/ERC4626.sol";
diff --git a/src/compound/external/ICERC20.sol b/src/compound/external/ICERC20.sol
index 4ae5433..c3f056a 100644
--- a/src/compound/external/ICERC20.sol
+++ b/src/compound/external/ICERC20.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-pragma solidity 0.8.21;
+pragma solidity ^0.8.19;
 
 import { ERC20 } from "solmate/tokens/ERC20.sol";
 
diff --git a/src/compound/external/IComet.sol b/src/compound/external/IComet.sol
index ded24a0..f2944e5 100644
--- a/src/compound/external/IComet.sol
+++ b/src/compound/external/IComet.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: BUSL-1.1
-pragma solidity 0.8.21;
+pragma solidity ^0.8.19;
 
 /**
  * @title Compound's Comet Main Interface (without Ext)
diff --git a/src/compound/external/ICometRewards.sol b/src/compound/external/ICometRewards.sol
index 5fc56f0..327e113 100644
--- a/src/compound/external/ICometRewards.sol
+++ b/src/compound/external/ICometRewards.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: BUSL-1.1
-pragma solidity 0.8.21;
+pragma solidity ^0.8.19;
 
 interface ICometRewards {
     struct RewardConfig {
diff --git a/src/compound/external/IComptroller.sol b/src/compound/external/IComptroller.sol
index 940b41e..d3ba077 100644
--- a/src/compound/external/IComptroller.sol
+++ b/src/compound/external/IComptroller.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-pragma solidity 0.8.21;
+pragma solidity ^0.8.19;
 
 import { ICERC20 } from "./ICERC20.sol";
 
diff --git a/src/compound/external/IInterestRateModel.sol b/src/compound/external/IInterestRateModel.sol
index c2ed18f..bf10573 100644
--- a/src/compound/external/IInterestRateModel.sol
+++ b/src/compound/external/IInterestRateModel.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-pragma solidity 0.8.21;
+pragma solidity ^0.8.19;
 
 interface IInterestRateModel {
     function getBorrowRate(uint256, uint256, uint256) external view returns (uint256);
diff --git a/src/compound/external/IWETH.sol b/src/compound/external/IWETH.sol
index 48eac83..54f9aa2 100644
--- a/src/compound/external/IWETH.sol
+++ b/src/compound/external/IWETH.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-pragma solidity 0.8.21;
+pragma solidity ^0.8.19;
 
 interface IWETH {
     function deposit() external payable;
diff --git a/src/compound/external/LibCompound.sol b/src/compound/external/LibCompound.sol
index 4b97384..26fd09e 100644
--- a/src/compound/external/LibCompound.sol
+++ b/src/compound/external/LibCompound.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-pragma solidity 0.8.21;
+pragma solidity ^0.8.19;
 
 import { FixedPointMathLib } from "solmate/utils/FixedPointMathLib.sol";
 
diff --git a/src/compound/test/CompoundV2ERC4626Wrapper.t.sol b/src/compound/test/CompoundV2ERC4626Wrapper.t.sol
index 8f6d9f5..faee548 100644
--- a/src/compound/test/CompoundV2ERC4626Wrapper.t.sol
+++ b/src/compound/test/CompoundV2ERC4626Wrapper.t.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-pragma solidity 0.8.21;
+pragma solidity ^0.8.19;
 
 import "forge-std/Test.sol";
 import { ERC20 } from "solmate/tokens/ERC20.sol";
diff --git a/src/compound/test/CompoundV3ERC4626Wrapper.t.sol b/src/compound/test/CompoundV3ERC4626Wrapper.t.sol
index ac88ae0..7f1934e 100644
--- a/src/compound/test/CompoundV3ERC4626Wrapper.t.sol
+++ b/src/compound/test/CompoundV3ERC4626Wrapper.t.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-pragma solidity 0.8.21;
+pragma solidity ^0.8.19;
 
 import "forge-std/Test.sol";
 import { ERC20 } from "solmate/tokens/ERC20.sol";
diff --git a/src/geist/GeistERC4626Reinvest.sol b/src/geist/GeistERC4626Reinvest.sol
index 14cb056..99746b6 100644
--- a/src/geist/GeistERC4626Reinvest.sol
+++ b/src/geist/GeistERC4626Reinvest.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-pragma solidity 0.8.21;
+pragma solidity ^0.8.19;
 
 import { ERC20 } from "solmate/tokens/ERC20.sol";
 import { ERC4626 } from "solmate/mixins/ERC4626.sol";
diff --git a/src/geist/external/IGLendingPool.sol b/src/geist/external/IGLendingPool.sol
index 15dfeb9..b89641b 100644
--- a/src/geist/external/IGLendingPool.sol
+++ b/src/geist/external/IGLendingPool.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-pragma solidity 0.8.21;
+pragma solidity ^0.8.19;
 
 // Aave lending pool interface
 // Documentation: https://docs.aave.com/developers/the-core-protocol/lendingpool/ilendingpool
diff --git a/src/geist/external/IMultiFeeDistribution.sol b/src/geist/external/IMultiFeeDistribution.sol
index a78286d..96d3459 100644
--- a/src/geist/external/IMultiFeeDistribution.sol
+++ b/src/geist/external/IMultiFeeDistribution.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-pragma solidity 0.8.21;
+pragma solidity ^0.8.19;
 
 interface IMultiFeeDistribution {
     struct RewardData {
diff --git a/src/geist/test/GeistERC4626Reinvest.t.sol b/src/geist/test/GeistERC4626Reinvest.t.sol
index 49340d5..677e4fe 100644
--- a/src/geist/test/GeistERC4626Reinvest.t.sol
+++ b/src/geist/test/GeistERC4626Reinvest.t.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-pragma solidity 0.8.21;
+pragma solidity ^0.8.19;
 
 import "forge-std/Test.sol";
 import { ERC20 } from "solmate/tokens/ERC20.sol";
diff --git a/src/interfaces/IERC4626TimelockVault.sol b/src/interfaces/IERC4626TimelockVault.sol
index c157665..280f531 100644
--- a/src/interfaces/IERC4626TimelockVault.sol
+++ b/src/interfaces/IERC4626TimelockVault.sol
@@ -1,5 +1,5 @@
 ///SPDX-License-Identifier: Apache-2.0
-pragma solidity 0.8.21;
+pragma solidity ^0.8.19;
 
 import { IERC4626 } from "openzeppelin-contracts/contracts/interfaces/IERC4626.sol";
 
diff --git a/src/kycdao-4626/interfaces/IKycValidity.sol b/src/kycdao-4626/interfaces/IKycValidity.sol
index 7a9d488..da0be2f 100644
--- a/src/kycdao-4626/interfaces/IKycValidity.sol
+++ b/src/kycdao-4626/interfaces/IKycValidity.sol
@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: Apache-2.0
 
-pragma solidity 0.8.21;
+pragma solidity ^0.8.19;
 
 interface IKycValidity {
     /// @dev Check whether a given address has a valid kycNFT token
diff --git a/src/kycdao-4626/kycdao4626.sol b/src/kycdao-4626/kycdao4626.sol
index e737447..2408649 100644
--- a/src/kycdao-4626/kycdao4626.sol
+++ b/src/kycdao-4626/kycdao4626.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-pragma solidity 0.8.21;
+pragma solidity ^0.8.19;
 
 import { ERC20 } from "solmate/tokens/ERC20.sol";
 import { ERC4626 } from "solmate/mixins/ERC4626.sol";
diff --git a/src/kycdao-4626/test/kycdao4626.t.sol b/src/kycdao-4626/test/kycdao4626.t.sol
index f6d1e22..2df6095 100644
--- a/src/kycdao-4626/test/kycdao4626.t.sol
+++ b/src/kycdao-4626/test/kycdao4626.t.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-pragma solidity 0.8.21;
+pragma solidity ^0.8.19;
 
 import "forge-std/Test.sol";
 import "forge-std/console.sol";
diff --git a/src/lido/interfaces/ICurve.sol b/src/lido/interfaces/ICurve.sol
index c1c7274..98884e8 100644
--- a/src/lido/interfaces/ICurve.sol
+++ b/src/lido/interfaces/ICurve.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-pragma solidity 0.8.21;
+pragma solidity ^0.8.19;
 
 interface ICurve {
     function exchange(int128, int128, uint256, uint256) external returns (uint256);
diff --git a/src/lido/interfaces/IMatic.sol b/src/lido/interfaces/IMatic.sol
index f24ba00..e1e6e8c 100644
--- a/src/lido/interfaces/IMatic.sol
+++ b/src/lido/interfaces/IMatic.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-pragma solidity 0.8.21;
+pragma solidity ^0.8.19;
 
 interface IMATIC {
     function balanceOf(address) external view returns (uint256);
diff --git a/src/lido/interfaces/IStETH.sol b/src/lido/interfaces/IStETH.sol
index fa6ac7a..1344a3e 100644
--- a/src/lido/interfaces/IStETH.sol
+++ b/src/lido/interfaces/IStETH.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-pragma solidity 0.8.21;
+pragma solidity ^0.8.19;
 
 interface IStETH {
     function getTotalShares() external view returns (uint256);
diff --git a/src/lido/interfaces/IStMATIC.sol b/src/lido/interfaces/IStMATIC.sol
index 4222a2e..72346b1 100644
--- a/src/lido/interfaces/IStMATIC.sol
+++ b/src/lido/interfaces/IStMATIC.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-pragma solidity 0.8.21;
+pragma solidity ^0.8.19;
 
 interface IStMATIC {
     function submit(uint256 _amount, address _referal) external returns (uint256);
diff --git a/src/lido/interfaces/IWETH.sol b/src/lido/interfaces/IWETH.sol
index c2aafd1..6c89fd8 100644
--- a/src/lido/interfaces/IWETH.sol
+++ b/src/lido/interfaces/IWETH.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-pragma solidity 0.8.21;
+pragma solidity ^0.8.19;
 
 interface IWETH {
     function balanceOf(address) external view returns (uint256);
diff --git a/src/lido/interfaces/wstETH.sol b/src/lido/interfaces/wstETH.sol
index 48eeb93..2a3b9d8 100644
--- a/src/lido/interfaces/wstETH.sol
+++ b/src/lido/interfaces/wstETH.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-pragma solidity 0.8.21;
+pragma solidity ^0.8.19;
 
 interface wstETH {
     function wrap(uint256) external returns (uint256);
diff --git a/src/lido/stETH.sol b/src/lido/stETH.sol
index 6cc8679..051af06 100644
--- a/src/lido/stETH.sol
+++ b/src/lido/stETH.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-pragma solidity 0.8.21;
+pragma solidity ^0.8.19;
 
 import { ERC20 } from "solmate/tokens/ERC20.sol";
 import { ERC4626 } from "solmate/mixins/ERC4626.sol";
diff --git a/src/lido/stETH_swap.sol b/src/lido/stETH_swap.sol
index 4dc4ecb..edbb0cd 100644
--- a/src/lido/stETH_swap.sol
+++ b/src/lido/stETH_swap.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-pragma solidity 0.8.21;
+pragma solidity ^0.8.19;
 
 import { ERC20 } from "solmate/tokens/ERC20.sol";
 import { ERC4626 } from "solmate/mixins/ERC4626.sol";
diff --git a/src/lido/stMATIC.sol b/src/lido/stMATIC.sol
index a0e3290..c41ea19 100644
--- a/src/lido/stMATIC.sol
+++ b/src/lido/stMATIC.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-pragma solidity 0.8.21;
+pragma solidity ^0.8.19;
 
 import { ERC20 } from "solmate/tokens/ERC20.sol";
 import { ERC4626 } from "solmate/mixins/ERC4626.sol";
diff --git a/src/lido/test/stETH.t.sol b/src/lido/test/stETH.t.sol
index 1a4d2b4..162bd0a 100644
--- a/src/lido/test/stETH.t.sol
+++ b/src/lido/test/stETH.t.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-pragma solidity 0.8.21;
+pragma solidity ^0.8.19;
 
 import "forge-std/Test.sol";
 import "forge-std/console.sol";
diff --git a/src/lido/test/stETH_swap.t.sol b/src/lido/test/stETH_swap.t.sol
index 6856d20..351ae60 100644
--- a/src/lido/test/stETH_swap.t.sol
+++ b/src/lido/test/stETH_swap.t.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-pragma solidity 0.8.21;
+pragma solidity ^0.8.19;
 
 import "forge-std/Test.sol";
 import "forge-std/console.sol";
diff --git a/src/lido/test/stMatic.t.sol b/src/lido/test/stMatic.t.sol
index 0a687b9..ce6c37c 100644
--- a/src/lido/test/stMatic.t.sol
+++ b/src/lido/test/stMatic.t.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-pragma solidity 0.8.21;
+pragma solidity ^0.8.19;
 
 import "forge-std/Test.sol";
 import "forge-std/console.sol";
diff --git a/src/rocketPool/interfaces/IRProtocol.sol b/src/rocketPool/interfaces/IRProtocol.sol
index 5cbef28..2724dc3 100644
--- a/src/rocketPool/interfaces/IRProtocol.sol
+++ b/src/rocketPool/interfaces/IRProtocol.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-pragma solidity 0.8.21;
+pragma solidity ^0.8.19;
 
 /// https://github.com/rocket-pool/rocketpool/blob/master/contracts/interface/dao/protocol/settings/RocketDAOProtocolSettingsDepositInterface.sol
 interface IRPROTOCOL {
diff --git a/src/rocketPool/interfaces/IReth.sol b/src/rocketPool/interfaces/IReth.sol
index dcc6df1..b9ddcf6 100644
--- a/src/rocketPool/interfaces/IReth.sol
+++ b/src/rocketPool/interfaces/IReth.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-pragma solidity 0.8.21;
+pragma solidity ^0.8.19;
 
 interface IRETH {
     function getBalance() external view returns (uint256);
diff --git a/src/rocketPool/interfaces/IRethToken.sol b/src/rocketPool/interfaces/IRethToken.sol
index 298a4d7..10230cb 100644
--- a/src/rocketPool/interfaces/IRethToken.sol
+++ b/src/rocketPool/interfaces/IRethToken.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-pragma solidity 0.8.21;
+pragma solidity ^0.8.19;
 
 import "openzeppelin-contracts/contracts/token/ERC20/IERC20.sol";
 
diff --git a/src/rocketPool/interfaces/IRstorage.sol b/src/rocketPool/interfaces/IRstorage.sol
index 06843fc..aa48a9c 100644
--- a/src/rocketPool/interfaces/IRstorage.sol
+++ b/src/rocketPool/interfaces/IRstorage.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-pragma solidity 0.8.21;
+pragma solidity ^0.8.19;
 
 interface IRSTORAGE {
     function getAddress(bytes32) external view returns (address);
diff --git a/src/rocketPool/interfaces/IWETH.sol b/src/rocketPool/interfaces/IWETH.sol
index c2aafd1..6c89fd8 100644
--- a/src/rocketPool/interfaces/IWETH.sol
+++ b/src/rocketPool/interfaces/IWETH.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-pragma solidity 0.8.21;
+pragma solidity ^0.8.19;
 
 interface IWETH {
     function balanceOf(address) external view returns (uint256);
diff --git a/src/rocketPool/rEth.sol b/src/rocketPool/rEth.sol
index 22a6c7d..68c0899 100644
--- a/src/rocketPool/rEth.sol
+++ b/src/rocketPool/rEth.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-pragma solidity 0.8.21;
+pragma solidity ^0.8.19;
 
 import { ERC20 } from "solmate/tokens/ERC20.sol";
 import { ERC4626 } from "solmate/mixins/ERC4626.sol";
diff --git a/src/rocketPool/test/rEth.t.sol b/src/rocketPool/test/rEth.t.sol
index 1381cf1..b5a0a08 100644
--- a/src/rocketPool/test/rEth.t.sol
+++ b/src/rocketPool/test/rEth.t.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-pragma solidity 0.8.21;
+pragma solidity ^0.8.19;
 
 import "forge-std/Test.sol";
 import "forge-std/console.sol";
diff --git a/src/uniswap-v2/interfaces/AggregatorV3Interface.sol b/src/uniswap-v2/interfaces/AggregatorV3Interface.sol
index 6da74f5..81c0987 100644
--- a/src/uniswap-v2/interfaces/AggregatorV3Interface.sol
+++ b/src/uniswap-v2/interfaces/AggregatorV3Interface.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: MIT
-pragma solidity 0.8.21;
+pragma solidity ^0.8.19;
 
 interface AggregatorV3Interface {
     function decimals() external view returns (uint8);
diff --git a/src/uniswap-v2/interfaces/IUniswapV2ERC20.sol b/src/uniswap-v2/interfaces/IUniswapV2ERC20.sol
index ba2c05f..e5acbe1 100644
--- a/src/uniswap-v2/interfaces/IUniswapV2ERC20.sol
+++ b/src/uniswap-v2/interfaces/IUniswapV2ERC20.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-pragma solidity 0.8.21;
+pragma solidity ^0.8.19;
 
 interface IUniswapV2ERC20 {
     event Approval(address indexed owner, address indexed spender, uint256 value);
diff --git a/src/uniswap-v2/interfaces/IUniswapV2Factory.sol b/src/uniswap-v2/interfaces/IUniswapV2Factory.sol
index 43f30dd..45df829 100644
--- a/src/uniswap-v2/interfaces/IUniswapV2Factory.sol
+++ b/src/uniswap-v2/interfaces/IUniswapV2Factory.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-pragma solidity 0.8.21;
+pragma solidity ^0.8.19;
 
 interface IUniswapV2Factory {
     event PairCreated(address indexed token0, address indexed token1, address pair, uint256);
diff --git a/src/uniswap-v2/interfaces/IUniswapV2Pair.sol b/src/uniswap-v2/interfaces/IUniswapV2Pair.sol
index 694138d..cb7a8cf 100644
--- a/src/uniswap-v2/interfaces/IUniswapV2Pair.sol
+++ b/src/uniswap-v2/interfaces/IUniswapV2Pair.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-pragma solidity 0.8.21;
+pragma solidity ^0.8.19;
 
 interface IUniswapV2Pair {
     event Approval(address indexed owner, address indexed spender, uint256 value);
diff --git a/src/uniswap-v2/interfaces/IUniswapV2Router.sol b/src/uniswap-v2/interfaces/IUniswapV2Router.sol
index 250eb6f..98dc49e 100644
--- a/src/uniswap-v2/interfaces/IUniswapV2Router.sol
+++ b/src/uniswap-v2/interfaces/IUniswapV2Router.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-pragma solidity 0.8.21;
+pragma solidity ^0.8.19;
 
 interface IUniswapV2Router {
     function removeLiquidity(
diff --git a/src/uniswap-v2/interfaces/IUniswapV3.sol b/src/uniswap-v2/interfaces/IUniswapV3.sol
index 60b83d6..cc1f267 100644
--- a/src/uniswap-v2/interfaces/IUniswapV3.sol
+++ b/src/uniswap-v2/interfaces/IUniswapV3.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-pragma solidity 0.8.21;
+pragma solidity ^0.8.19;
 
 interface IUniswapV3Pool {
     function observe(uint32[] calldata secondsAgos)
diff --git a/src/uniswap-v2/no-swap/UniswapV2WrapperERC4626.sol b/src/uniswap-v2/no-swap/UniswapV2WrapperERC4626.sol
index 5a47e70..446b07f 100644
--- a/src/uniswap-v2/no-swap/UniswapV2WrapperERC4626.sol
+++ b/src/uniswap-v2/no-swap/UniswapV2WrapperERC4626.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-pragma solidity 0.8.21;
+pragma solidity ^0.8.19;
 
 import { ERC20 } from "solmate/tokens/ERC20.sol";
 import { ERC4626 } from "solmate/mixins/ERC4626.sol";
diff --git a/src/uniswap-v2/swap-built-in/UniswapV2ERC4626PoolFactory.sol b/src/uniswap-v2/swap-built-in/UniswapV2ERC4626PoolFactory.sol
index 8a1447c..2b6529d 100644
--- a/src/uniswap-v2/swap-built-in/UniswapV2ERC4626PoolFactory.sol
+++ b/src/uniswap-v2/swap-built-in/UniswapV2ERC4626PoolFactory.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-pragma solidity 0.8.21;
+pragma solidity ^0.8.19;
 
 import { ERC20 } from "solmate/tokens/ERC20.sol";
 import { ERC4626 } from "solmate/mixins/ERC4626.sol";
diff --git a/src/uniswap-v2/swap-built-in/UniswapV2ERC4626Swap.sol b/src/uniswap-v2/swap-built-in/UniswapV2ERC4626Swap.sol
index 37f6078..9970719 100644
--- a/src/uniswap-v2/swap-built-in/UniswapV2ERC4626Swap.sol
+++ b/src/uniswap-v2/swap-built-in/UniswapV2ERC4626Swap.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-pragma solidity 0.8.21;
+pragma solidity ^0.8.19;
 
 import { ERC20 } from "solmate/tokens/ERC20.sol";
 import { ERC4626 } from "solmate/mixins/ERC4626.sol";
diff --git a/src/uniswap-v2/test/UniswapV2.t.sol b/src/uniswap-v2/test/UniswapV2.t.sol
index b65b811..4e78445 100644
--- a/src/uniswap-v2/test/UniswapV2.t.sol
+++ b/src/uniswap-v2/test/UniswapV2.t.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-pragma solidity 0.8.21;
+pragma solidity ^0.8.19;
 
 import "forge-std/Test.sol";
 import "forge-std/console.sol";
diff --git a/src/uniswap-v2/test/UniswapV2Swap.t.sol b/src/uniswap-v2/test/UniswapV2Swap.t.sol
index cb7e976..a8a3fae 100644
--- a/src/uniswap-v2/test/UniswapV2Swap.t.sol
+++ b/src/uniswap-v2/test/UniswapV2Swap.t.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-pragma solidity 0.8.21;
+pragma solidity ^0.8.19;
 
 import "forge-std/Test.sol";
 import "forge-std/console.sol";
diff --git a/src/uniswap-v2/test/UniswapV2SwapLocal.t.sol b/src/uniswap-v2/test/UniswapV2SwapLocal.t.sol
index 9863869..0c16def 100644
--- a/src/uniswap-v2/test/UniswapV2SwapLocal.t.sol
+++ b/src/uniswap-v2/test/UniswapV2SwapLocal.t.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-pragma solidity 0.8.21;
+pragma solidity ^0.8.19;
 
 import "forge-std/Test.sol";
 import "forge-std/console.sol";
diff --git a/src/uniswap-v2/utils/UniswapV2Library.sol b/src/uniswap-v2/utils/UniswapV2Library.sol
index 6d5d290..e9fafff 100644
--- a/src/uniswap-v2/utils/UniswapV2Library.sol
+++ b/src/uniswap-v2/utils/UniswapV2Library.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-pragma solidity 0.8.21;
+pragma solidity ^0.8.19;
 
 import { IUniswapV2Pair } from "../interfaces/IUniswapV2Pair.sol";
 
diff --git a/src/venus/VenusERC4626Reinvest.sol b/src/venus/VenusERC4626Reinvest.sol
index 6193b12..da7cca5 100644
--- a/src/venus/VenusERC4626Reinvest.sol
+++ b/src/venus/VenusERC4626Reinvest.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-pragma solidity 0.8.21;
+pragma solidity ^0.8.19;
 
 import { ERC20 } from "solmate/tokens/ERC20.sol";
 import { ERC4626 } from "solmate/mixins/ERC4626.sol";
diff --git a/src/venus/external/IVComptroller.sol b/src/venus/external/IVComptroller.sol
index ac3ff80..67c029a 100644
--- a/src/venus/external/IVComptroller.sol
+++ b/src/venus/external/IVComptroller.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-pragma solidity 0.8.21;
+pragma solidity ^0.8.19;
 
 import { IVERC20 } from "./IVERC20.sol";
 
diff --git a/src/venus/external/IVERC20.sol b/src/venus/external/IVERC20.sol
index c3c4c73..64705e0 100644
--- a/src/venus/external/IVERC20.sol
+++ b/src/venus/external/IVERC20.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-pragma solidity 0.8.21;
+pragma solidity ^0.8.19;
 
 import { ERC20 } from "solmate/tokens/ERC20.sol";
 
diff --git a/src/venus/external/IVInterestRateModel.sol b/src/venus/external/IVInterestRateModel.sol
index 1b60724..e18a12a 100644
--- a/src/venus/external/IVInterestRateModel.sol
+++ b/src/venus/external/IVInterestRateModel.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-pragma solidity 0.8.21;
+pragma solidity ^0.8.19;
 
 interface IVInterestRateModel {
     function getBorrowRate(uint256, uint256, uint256) external view returns (uint256);
diff --git a/src/venus/external/LibVCompound.sol b/src/venus/external/LibVCompound.sol
index 934a61e..49b2161 100644
--- a/src/venus/external/LibVCompound.sol
+++ b/src/venus/external/LibVCompound.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-pragma solidity 0.8.21;
+pragma solidity ^0.8.19;
 
 import { FixedPointMathLib } from "solmate/utils/FixedPointMathLib.sol";
 
diff --git a/src/venus/test/VenusERC4626Harvest.t.sol b/src/venus/test/VenusERC4626Harvest.t.sol
index e12d82c..a210153 100644
--- a/src/venus/test/VenusERC4626Harvest.t.sol
+++ b/src/venus/test/VenusERC4626Harvest.t.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-pragma solidity 0.8.21;
+pragma solidity ^0.8.19;
 
 import "forge-std/Test.sol";
 import { ERC20 } from "solmate/tokens/ERC20.sol";
diff --git a/src/venus/test/VenusERC4626Wrapper.t.sol b/src/venus/test/VenusERC4626Wrapper.t.sol
index fc46b3b..94be560 100644
--- a/src/venus/test/VenusERC4626Wrapper.t.sol
+++ b/src/venus/test/VenusERC4626Wrapper.t.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-pragma solidity 0.8.21;
+pragma solidity ^0.8.19;
 
 import "forge-std/Test.sol";
 import { ERC20 } from "solmate/tokens/ERC20.sol";