diff --git a/packages/nitro-protocol/contracts/ConsensusApp.sol b/packages/nitro-protocol/contracts/ConsensusApp.sol
index 019f821cb..bdf25b6da 100644
--- a/packages/nitro-protocol/contracts/ConsensusApp.sol
+++ b/packages/nitro-protocol/contracts/ConsensusApp.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: MIT
-pragma solidity 0.8.20;
+pragma solidity ^0.8.20;
 
 import {IForceMoveApp} from './interfaces/IForceMoveApp.sol';
 import {Consensus} from './libraries/signature-logic/Consensus.sol';
diff --git a/packages/nitro-protocol/contracts/CountingApp.sol b/packages/nitro-protocol/contracts/CountingApp.sol
index 21783882b..d2513598e 100644
--- a/packages/nitro-protocol/contracts/CountingApp.sol
+++ b/packages/nitro-protocol/contracts/CountingApp.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: MIT
-pragma solidity 0.8.20;
+pragma solidity ^0.8.20;
 
 import {ExitFormat as Outcome} from '@statechannels/exit-format/contracts/ExitFormat.sol';
 import {StrictTurnTaking} from './libraries/signature-logic/StrictTurnTaking.sol';
diff --git a/packages/nitro-protocol/contracts/ForceMove.sol b/packages/nitro-protocol/contracts/ForceMove.sol
index 653758de7..ec1ede044 100644
--- a/packages/nitro-protocol/contracts/ForceMove.sol
+++ b/packages/nitro-protocol/contracts/ForceMove.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: MIT
-pragma solidity 0.8.20;
+pragma solidity ^0.8.20;
 
 import {NitroUtils} from './libraries/NitroUtils.sol';
 import {IForceMove} from './interfaces/IForceMove.sol';
diff --git a/packages/nitro-protocol/contracts/InterestBearingApp.sol b/packages/nitro-protocol/contracts/InterestBearingApp.sol
index 3c9b3c9ea..45a58c706 100644
--- a/packages/nitro-protocol/contracts/InterestBearingApp.sol
+++ b/packages/nitro-protocol/contracts/InterestBearingApp.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: MIT
-pragma solidity 0.8.20;
+pragma solidity ^0.8.20;
 
 import {IForceMoveApp} from './interfaces/IForceMoveApp.sol';
 import {Consensus} from './libraries/signature-logic/Consensus.sol';
diff --git a/packages/nitro-protocol/contracts/MultiAssetHolder.sol b/packages/nitro-protocol/contracts/MultiAssetHolder.sol
index 3478add4e..5a5839474 100644
--- a/packages/nitro-protocol/contracts/MultiAssetHolder.sol
+++ b/packages/nitro-protocol/contracts/MultiAssetHolder.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: MIT
-pragma solidity 0.8.20;
+pragma solidity ^0.8.20;
 
 import {ExitFormat as Outcome} from '@statechannels/exit-format/contracts/ExitFormat.sol';
 import {IERC20} from '@openzeppelin/contracts/token/ERC20/IERC20.sol';
diff --git a/packages/nitro-protocol/contracts/NitroAdjudicator.sol b/packages/nitro-protocol/contracts/NitroAdjudicator.sol
index 0b32e5256..21fee01fa 100644
--- a/packages/nitro-protocol/contracts/NitroAdjudicator.sol
+++ b/packages/nitro-protocol/contracts/NitroAdjudicator.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: MIT
-pragma solidity 0.8.20;
+pragma solidity ^0.8.20;
 
 import {ExitFormat as Outcome} from '@statechannels/exit-format/contracts/ExitFormat.sol';
 import {NitroUtils} from './libraries/NitroUtils.sol';
diff --git a/packages/nitro-protocol/contracts/StatusManager.sol b/packages/nitro-protocol/contracts/StatusManager.sol
index 345079500..58c0f6a8b 100644
--- a/packages/nitro-protocol/contracts/StatusManager.sol
+++ b/packages/nitro-protocol/contracts/StatusManager.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: MIT
-pragma solidity 0.8.20;
+pragma solidity ^0.8.20;
 
 import {IStatusManager} from './interfaces/IStatusManager.sol';
 
diff --git a/packages/nitro-protocol/contracts/Token.sol b/packages/nitro-protocol/contracts/Token.sol
index 03f135b98..9a4c12f12 100644
--- a/packages/nitro-protocol/contracts/Token.sol
+++ b/packages/nitro-protocol/contracts/Token.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: MIT
-pragma solidity 0.8.20;
+pragma solidity ^0.8.20;
 import {ERC20} from '@openzeppelin/contracts/token/ERC20/ERC20.sol';
 
 /**
diff --git a/packages/nitro-protocol/contracts/TrivialApp.sol b/packages/nitro-protocol/contracts/TrivialApp.sol
index 5ee230b3b..293a73732 100644
--- a/packages/nitro-protocol/contracts/TrivialApp.sol
+++ b/packages/nitro-protocol/contracts/TrivialApp.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: MIT
-pragma solidity 0.8.20;
+pragma solidity ^0.8.20;
 
 import {IForceMoveApp} from './interfaces/IForceMoveApp.sol';
 
diff --git a/packages/nitro-protocol/contracts/VirtualPaymentApp.sol b/packages/nitro-protocol/contracts/VirtualPaymentApp.sol
index 4d86ade40..6802e673d 100644
--- a/packages/nitro-protocol/contracts/VirtualPaymentApp.sol
+++ b/packages/nitro-protocol/contracts/VirtualPaymentApp.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: MIT
-pragma solidity 0.8.20;
+pragma solidity ^0.8.20;
 
 import {IForceMoveApp} from './interfaces/IForceMoveApp.sol';
 import {NitroUtils} from './libraries/NitroUtils.sol';
diff --git a/packages/nitro-protocol/contracts/auxiliary/BatchOperator.sol b/packages/nitro-protocol/contracts/auxiliary/BatchOperator.sol
index 8e7b73e41..237da26fd 100644
--- a/packages/nitro-protocol/contracts/auxiliary/BatchOperator.sol
+++ b/packages/nitro-protocol/contracts/auxiliary/BatchOperator.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: MIT
-pragma solidity 0.8.20;
+pragma solidity ^0.8.20;
 import {MultiAssetHolder} from '../MultiAssetHolder.sol';
 
 import {SafeERC20} from '@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol';
diff --git a/packages/nitro-protocol/contracts/interfaces/IForceMove.sol b/packages/nitro-protocol/contracts/interfaces/IForceMove.sol
index 39f970900..460f81892 100644
--- a/packages/nitro-protocol/contracts/interfaces/IForceMove.sol
+++ b/packages/nitro-protocol/contracts/interfaces/IForceMove.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: MIT
-pragma solidity 0.8.20;
+pragma solidity ^0.8.20;
 
 import {INitroTypes} from './INitroTypes.sol';
 
diff --git a/packages/nitro-protocol/contracts/interfaces/IForceMoveApp.sol b/packages/nitro-protocol/contracts/interfaces/IForceMoveApp.sol
index 8ea579064..995ee692b 100644
--- a/packages/nitro-protocol/contracts/interfaces/IForceMoveApp.sol
+++ b/packages/nitro-protocol/contracts/interfaces/IForceMoveApp.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: MIT
-pragma solidity 0.8.20;
+pragma solidity ^0.8.20;
 
 import {INitroTypes} from './INitroTypes.sol';
 
diff --git a/packages/nitro-protocol/contracts/interfaces/IMultiAssetHolder.sol b/packages/nitro-protocol/contracts/interfaces/IMultiAssetHolder.sol
index 11899ff52..d191ff325 100644
--- a/packages/nitro-protocol/contracts/interfaces/IMultiAssetHolder.sol
+++ b/packages/nitro-protocol/contracts/interfaces/IMultiAssetHolder.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: MIT
-pragma solidity 0.8.20;
+pragma solidity ^0.8.20;
 
 /**
  * @dev The IMultiAssetHolder interface calls for functions that allow assets to be transferred from one channel to other channel and/or external destinations, as well as for guarantees to be claimed.
diff --git a/packages/nitro-protocol/contracts/interfaces/INitroAdjudicator.sol b/packages/nitro-protocol/contracts/interfaces/INitroAdjudicator.sol
index e94807c91..92382a676 100644
--- a/packages/nitro-protocol/contracts/interfaces/INitroAdjudicator.sol
+++ b/packages/nitro-protocol/contracts/interfaces/INitroAdjudicator.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: MIT
-pragma solidity 0.8.20;
+pragma solidity ^0.8.20;
 
 import {ExitFormat as Outcome} from '@statechannels/exit-format/contracts/ExitFormat.sol';
 import {IMultiAssetHolder} from './IMultiAssetHolder.sol';
diff --git a/packages/nitro-protocol/contracts/interfaces/INitroTypes.sol b/packages/nitro-protocol/contracts/interfaces/INitroTypes.sol
index 2df6bc9bb..6d7fd7e34 100644
--- a/packages/nitro-protocol/contracts/interfaces/INitroTypes.sol
+++ b/packages/nitro-protocol/contracts/interfaces/INitroTypes.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: MIT
-pragma solidity 0.8.20;
+pragma solidity ^0.8.20;
 
 import {ExitFormat as Outcome} from '@statechannels/exit-format/contracts/ExitFormat.sol';
 
diff --git a/packages/nitro-protocol/contracts/interfaces/IStatusManager.sol b/packages/nitro-protocol/contracts/interfaces/IStatusManager.sol
index ca1a921a7..cc091e030 100644
--- a/packages/nitro-protocol/contracts/interfaces/IStatusManager.sol
+++ b/packages/nitro-protocol/contracts/interfaces/IStatusManager.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: MIT
-pragma solidity 0.8.20;
+pragma solidity ^0.8.20;
 
 interface IStatusManager {
     enum ChannelMode {
diff --git a/packages/nitro-protocol/contracts/libraries/NitroUtils.sol b/packages/nitro-protocol/contracts/libraries/NitroUtils.sol
index ec4f46b39..ecb4ad79a 100644
--- a/packages/nitro-protocol/contracts/libraries/NitroUtils.sol
+++ b/packages/nitro-protocol/contracts/libraries/NitroUtils.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: MIT
-pragma solidity 0.8.20;
+pragma solidity ^0.8.20;
 
 import {INitroTypes} from '../interfaces/INitroTypes.sol';
 import {ExitFormat as Outcome} from '@statechannels/exit-format/contracts/ExitFormat.sol';
diff --git a/packages/nitro-protocol/contracts/libraries/signature-logic/Consensus.sol b/packages/nitro-protocol/contracts/libraries/signature-logic/Consensus.sol
index eec991b07..ce87d04b5 100644
--- a/packages/nitro-protocol/contracts/libraries/signature-logic/Consensus.sol
+++ b/packages/nitro-protocol/contracts/libraries/signature-logic/Consensus.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: MIT
-pragma solidity 0.8.20;
+pragma solidity ^0.8.20;
 
 import {NitroUtils} from '../NitroUtils.sol';
 import {INitroTypes} from '../../interfaces/INitroTypes.sol';
diff --git a/packages/nitro-protocol/contracts/libraries/signature-logic/StrictTurnTaking.sol b/packages/nitro-protocol/contracts/libraries/signature-logic/StrictTurnTaking.sol
index a552457cb..994cbac6e 100644
--- a/packages/nitro-protocol/contracts/libraries/signature-logic/StrictTurnTaking.sol
+++ b/packages/nitro-protocol/contracts/libraries/signature-logic/StrictTurnTaking.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: MIT
-pragma solidity 0.8.20;
+pragma solidity ^0.8.20;
 
 import {NitroUtils} from '../NitroUtils.sol';
 import {INitroTypes} from '../../interfaces/INitroTypes.sol';