diff --git a/foundry.toml b/foundry.toml
index ebdfa111..a2a4c9fb 100644
--- a/foundry.toml
+++ b/foundry.toml
@@ -1,5 +1,5 @@
 [profile.default]
-solc = "0.8.15"
+solc_version = "0.8.15"
 bytecode_hash = "none"
 optimizer_runs = 1000000
 
diff --git a/src/test/Auth.t.sol b/src/test/Auth.t.sol
index 9e315288..47fb3aa7 100644
--- a/src/test/Auth.t.sol
+++ b/src/test/Auth.t.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: AGPL-3.0-only
-pragma solidity 0.8.15;
+pragma solidity ^0.8.15;
 
 import {DSTestPlus} from "./utils/DSTestPlus.sol";
 import {MockAuthChild} from "./utils/mocks/MockAuthChild.sol";
diff --git a/src/test/Bytes32AddressLib.t.sol b/src/test/Bytes32AddressLib.t.sol
index 6c0a3d8e..846063c7 100644
--- a/src/test/Bytes32AddressLib.t.sol
+++ b/src/test/Bytes32AddressLib.t.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: AGPL-3.0-only
-pragma solidity 0.8.15;
+pragma solidity ^0.8.15;
 
 import {DSTestPlus} from "./utils/DSTestPlus.sol";
 
diff --git a/src/test/CREATE3.t.sol b/src/test/CREATE3.t.sol
index b279eeb2..f41b77eb 100644
--- a/src/test/CREATE3.t.sol
+++ b/src/test/CREATE3.t.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: AGPL-3.0-only
-pragma solidity 0.8.15;
+pragma solidity ^0.8.15;
 
 import {WETH} from "../tokens/WETH.sol";
 import {DSTestPlus} from "./utils/DSTestPlus.sol";
diff --git a/src/test/DSTestPlus.t.sol b/src/test/DSTestPlus.t.sol
index db108600..b529e043 100644
--- a/src/test/DSTestPlus.t.sol
+++ b/src/test/DSTestPlus.t.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: AGPL-3.0-only
-pragma solidity 0.8.15;
+pragma solidity ^0.8.15;
 
 import {DSTestPlus} from "./utils/DSTestPlus.sol";
 
diff --git a/src/test/ERC1155.t.sol b/src/test/ERC1155.t.sol
index 9e32d88b..b6a5deba 100644
--- a/src/test/ERC1155.t.sol
+++ b/src/test/ERC1155.t.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: AGPL-3.0-only
-pragma solidity 0.8.15;
+pragma solidity ^0.8.15;
 
 import {DSTestPlus} from "./utils/DSTestPlus.sol";
 import {DSInvariantTest} from "./utils/DSInvariantTest.sol";
diff --git a/src/test/ERC20.t.sol b/src/test/ERC20.t.sol
index 1506d8cf..7a549f36 100644
--- a/src/test/ERC20.t.sol
+++ b/src/test/ERC20.t.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: AGPL-3.0-only
-pragma solidity 0.8.15;
+pragma solidity ^0.8.15;
 
 import {DSTestPlus} from "./utils/DSTestPlus.sol";
 import {DSInvariantTest} from "./utils/DSInvariantTest.sol";
diff --git a/src/test/ERC4626.t.sol b/src/test/ERC4626.t.sol
index 816c8e48..5cba9b64 100644
--- a/src/test/ERC4626.t.sol
+++ b/src/test/ERC4626.t.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: AGPL-3.0-only
-pragma solidity 0.8.15;
+pragma solidity ^0.8.15;
 
 import {DSTestPlus} from "./utils/DSTestPlus.sol";
 
diff --git a/src/test/ERC721.t.sol b/src/test/ERC721.t.sol
index 81de0ff6..db968bf5 100644
--- a/src/test/ERC721.t.sol
+++ b/src/test/ERC721.t.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: AGPL-3.0-only
-pragma solidity 0.8.15;
+pragma solidity ^0.8.15;
 
 import {DSTestPlus} from "./utils/DSTestPlus.sol";
 import {DSInvariantTest} from "./utils/DSInvariantTest.sol";
diff --git a/src/test/FixedPointMathLib.t.sol b/src/test/FixedPointMathLib.t.sol
index 789f957a..d46133da 100644
--- a/src/test/FixedPointMathLib.t.sol
+++ b/src/test/FixedPointMathLib.t.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: AGPL-3.0-only
-pragma solidity 0.8.15;
+pragma solidity ^0.8.15;
 
 import {DSTestPlus} from "./utils/DSTestPlus.sol";
 
diff --git a/src/test/MultiRolesAuthority.t.sol b/src/test/MultiRolesAuthority.t.sol
index eedf6a08..56998210 100644
--- a/src/test/MultiRolesAuthority.t.sol
+++ b/src/test/MultiRolesAuthority.t.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: AGPL-3.0-only
-pragma solidity 0.8.15;
+pragma solidity ^0.8.15;
 
 import {DSTestPlus} from "./utils/DSTestPlus.sol";
 import {MockAuthority} from "./utils/mocks/MockAuthority.sol";
diff --git a/src/test/Owned.t.sol b/src/test/Owned.t.sol
index 08a02392..bcc6eafd 100644
--- a/src/test/Owned.t.sol
+++ b/src/test/Owned.t.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: AGPL-3.0-only
-pragma solidity 0.8.15;
+pragma solidity ^0.8.15;
 
 import {DSTestPlus} from "./utils/DSTestPlus.sol";
 import {MockOwned} from "./utils/mocks/MockOwned.sol";
diff --git a/src/test/ReentrancyGuard.t.sol b/src/test/ReentrancyGuard.t.sol
index 842e3672..e34454b1 100644
--- a/src/test/ReentrancyGuard.t.sol
+++ b/src/test/ReentrancyGuard.t.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: AGPL-3.0-only
-pragma solidity 0.8.15;
+pragma solidity ^0.8.15;
 
 import {DSTestPlus} from "./utils/DSTestPlus.sol";
 
diff --git a/src/test/RolesAuthority.t.sol b/src/test/RolesAuthority.t.sol
index e01db7e5..ae694509 100644
--- a/src/test/RolesAuthority.t.sol
+++ b/src/test/RolesAuthority.t.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: AGPL-3.0-only
-pragma solidity 0.8.15;
+pragma solidity ^0.8.15;
 
 import {DSTestPlus} from "./utils/DSTestPlus.sol";
 import {MockAuthority} from "./utils/mocks/MockAuthority.sol";
diff --git a/src/test/SSTORE2.t.sol b/src/test/SSTORE2.t.sol
index 5d97ed7f..2af553e3 100644
--- a/src/test/SSTORE2.t.sol
+++ b/src/test/SSTORE2.t.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: AGPL-3.0-only
-pragma solidity 0.8.15;
+pragma solidity ^0.8.15;
 
 import {DSTestPlus} from "./utils/DSTestPlus.sol";
 
diff --git a/src/test/SafeCastLib.t.sol b/src/test/SafeCastLib.t.sol
index 52a6c070..a4f3d5f0 100644
--- a/src/test/SafeCastLib.t.sol
+++ b/src/test/SafeCastLib.t.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: AGPL-3.0-only
-pragma solidity 0.8.15;
+pragma solidity ^0.8.15;
 
 import {DSTestPlus} from "./utils/DSTestPlus.sol";
 
diff --git a/src/test/SafeTransferLib.t.sol b/src/test/SafeTransferLib.t.sol
index b976e9f6..8d85799b 100644
--- a/src/test/SafeTransferLib.t.sol
+++ b/src/test/SafeTransferLib.t.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: AGPL-3.0-only
-pragma solidity 0.8.15;
+pragma solidity ^0.8.15;
 
 import {MockERC20} from "./utils/mocks/MockERC20.sol";
 import {RevertingToken} from "./utils/weird-tokens/RevertingToken.sol";
diff --git a/src/test/WETH.t.sol b/src/test/WETH.t.sol
index a13761ee..91cfc28b 100644
--- a/src/test/WETH.t.sol
+++ b/src/test/WETH.t.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: AGPL-3.0-only
-pragma solidity 0.8.15;
+pragma solidity ^0.8.15;
 
 import {DSTestPlus} from "./utils/DSTestPlus.sol";
 import {DSInvariantTest} from "./utils/DSInvariantTest.sol";