diff --git a/README.md b/README.md
index c05f7b7..20bdd8e 100644
--- a/README.md
+++ b/README.md
@@ -118,6 +118,9 @@ TokenFlow enables several key optimizations and use cases:
    - Works with standard ERC20 tokens
    - Works with fee-on-transfer tokens
 
-## License
 
-UNLICENSED
+
+## Acknowledgements
+
+- [0x Allowance Holder](https://github.com/0xProject/0x-settler/tree/master/src/allowanceholder) for the idea of transient storage allowance.
+- [Permit2](https://github.com/Uniswap/permit2)
\ No newline at end of file
diff --git a/script/TokenFlow.s.sol b/script/TokenFlow.s.sol
index 03bd5e6..5117faf 100644
--- a/script/TokenFlow.s.sol
+++ b/script/TokenFlow.s.sol
@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: UNLICENSED
+// SPDX-License-Identifier: MIT
 pragma solidity ^0.8.13;
 
 import {Script, console} from "forge-std/Script.sol";
diff --git a/src/TokenFlow.sol b/src/TokenFlow.sol
index 891ab74..71dfb91 100644
--- a/src/TokenFlow.sol
+++ b/src/TokenFlow.sol
@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: UNLICENSED
+// SPDX-License-Identifier: MIT
 pragma solidity ^0.8.28;
 
 import {ITokenFlow, Constraint, BadNetflows, InvalidScope, IFlowScope} from "src/ITokenFlow.sol";
diff --git a/src/TransientNetflows.sol b/src/TransientNetflows.sol
index 129903b..289117c 100644
--- a/src/TransientNetflows.sol
+++ b/src/TransientNetflows.sol
@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: UNLICENSED
+// SPDX-License-Identifier: MIT
 pragma solidity ^0.8.28;
 
 import {EfficientHashLib} from "solady/utils/EfficientHashLib.sol";
diff --git a/test/TokenFlow.t.sol b/test/TokenFlow.t.sol
index 02ef59f..e14251c 100644
--- a/test/TokenFlow.t.sol
+++ b/test/TokenFlow.t.sol
@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: UNLICENSED
+// SPDX-License-Identifier: MIT
 pragma solidity ^0.8.28;
 
 import {Test} from "forge-std/Test.sol";
diff --git a/test/TransientNetflows.t.sol b/test/TransientNetflows.t.sol
index 98123b9..c37525d 100644
--- a/test/TransientNetflows.t.sol
+++ b/test/TransientNetflows.t.sol
@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: UNLICENSED
+// SPDX-License-Identifier: MIT
 pragma solidity ^0.8.28;
 
 import {Test} from "forge-std/Test.sol";
diff --git a/test/mocks/MockERC20.sol b/test/mocks/MockERC20.sol
index 5d60e97..8a6e240 100644
--- a/test/mocks/MockERC20.sol
+++ b/test/mocks/MockERC20.sol
@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: UNLICENSED
+// SPDX-License-Identifier: MIT
 pragma solidity ^0.8.28;
 
 import {ERC20} from "solady/tokens/ERC20.sol";
diff --git a/test/mocks/MockFlowScope.sol b/test/mocks/MockFlowScope.sol
index f7b4fb9..655c9df 100644
--- a/test/mocks/MockFlowScope.sol
+++ b/test/mocks/MockFlowScope.sol
@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: UNLICENSED
+// SPDX-License-Identifier: MIT
 pragma solidity ^0.8.28;
 
 import {IFlowScope, Constraint} from "src/ITokenFlow.sol";