From e49bf1963c6f02e9689d8cdead38bc10c17f7886 Mon Sep 17 00:00:00 2001
From: lightclient <14004106+lightclient@users.noreply.github.com>
Date: Tue, 12 Mar 2024 16:05:03 -0600
Subject: [PATCH] Update EIP-1: add exec spec tests to allowed links

Merged by EIP-Bot.
---
 EIPS/eip-1.md | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/EIPS/eip-1.md b/EIPS/eip-1.md
index 94ec4543078b3..76e17ba9a7474 100644
--- a/EIPS/eip-1.md
+++ b/EIPS/eip-1.md
@@ -356,6 +356,23 @@ Permitted Yellow Paper URLs must anchor to a specific commit, and so must match
 ^(https://github\.com/ethereum/yellowpaper/blob/[0-9a-f]{40}/paper\.pdf)$
 ```
 
+### Execution Client Specification Tests
+
+Links to the Ethereum Execution Client Specification Tests may be included using normal markdown syntax, such as:
+
+```markdown
+[Ethereum Execution Client Specification Tests](https://github.com/ethereum/execution-specs/blob/9a1f22311f517401fed6c939a159b55600c454af/README.md)
+```
+
+Which renders to:
+
+[Ethereum Execution Client Specification Tests](https://github.com/ethereum/execution-specs/blob/9a1f22311f517401fed6c939a159b55600c454af/README.md)
+
+Permitted Execution Client Specification Tests URLs must anchor to a specific commit, and so must match this regular expression:
+
+```regex
+^(https://github.com/ethereum/execution-spec-tests/(blob|commit)/[0-9a-f]{40}/.*|https://github.com/ethereum/execution-spec-tests/tree/[0-9a-f]{40}/.*)$
+```
 
 ### Digital Object Identifier System