diff --git a/EIPS/eip-1344.md b/EIPS/eip-1344.md
index 1bea3780..29193030 100644
--- a/EIPS/eip-1344.md
+++ b/EIPS/eip-1344.md
@@ -5,6 +5,7 @@ author: Richard Meissner (@rmeissner), Bryant Eisenbach (@fubuloubu)
 discussions-to: https://ethereum-magicians.org/t/add-chain-id-opcode-for-replay-protection-when-handling-signed-messages-in-contracts/1131
 category: Core
 type: Standards Track
+requires: 155
 status: Last Call
 created: 2018-08-22
 review-period-end: 2019-04-30