diff --git a/blockchains/ethereum/README.md b/blockchains/ethereum/README.md
index 2bd2ba9..c3d23bd 100644
--- a/blockchains/ethereum/README.md
+++ b/blockchains/ethereum/README.md
@@ -120,5 +120,5 @@
 * **[resources for mev on ethereum](https://github.com/autistic-symposium/mev-toolkit/tree/main/MEV_by_chains/MEV_on_Ethereum)**
 * **[ef's ethereum protocol wiki](https://epf.wiki/#/)**
 * **[ethereum transaction visualizer](https://github.com/naddison36/tx2uml)**
-
+* **[understanding rollups, by barnabe](https://barnabe.substack.com/p/understanding-rollup-economics-from?s=r)**