diff --git a/MEV_by_chains/MEV_on_Arbitrum/README.md b/MEV_by_chains/MEV_on_Arbitrum/README.md
index aa65305..8d3431f 100644
--- a/MEV_by_chains/MEV_on_Arbitrum/README.md
+++ b/MEV_by_chains/MEV_on_Arbitrum/README.md
@@ -31,3 +31,4 @@
 * [transaction ordering policy](https://research.arbitrum.io/t/transaction-ordering-policy/127)
 * [arbitrum bridge tutorial](https://arbitrum.io/bridge-tutorial/)
 * [arbitrum gas fee, by dune](https://dune.com/blog/fueling-gas-spells-arbitrum)
+* [time boost: a new tx ordering policy proposal](https://research.arbitrum.io/t/time-boost-a-new-transaction-ordering-policy-proposal/8173)