diff --git a/README.md b/README.md
index 6afa347e2116..0f4d185446df 100644
--- a/README.md
+++ b/README.md
@@ -189,4 +189,6 @@ yarn test:slither
 
 ## License
 
-Files within this repository are licensed under the [MIT License](https://github.com/ethereum-optimism/optimism/blob/master/LICENSE) unless stated otherwise.
+Code forked from [`go-ethereum`](https://github.com/ethereum/go-ethereum) under the name [`l2geth`](https://github.com/ethereum-optimism/optimism/tree/master/l2geth) is licensed under the [GNU GPLv3](https://gist.github.com/kn9ts/cbe95340d29fc1aaeaa5dd5c059d2e60) in accordance with the [original license](https://github.com/ethereum/go-ethereum/blob/master/COPYING).
+
+All other files within this repository are licensed under the [MIT License](https://github.com/ethereum-optimism/optimism/blob/master/LICENSE) unless stated otherwise.