diff --git a/AGENTS.md b/AGENTS.md
index b757143..130128e 100644
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -7,3 +7,4 @@
 - Keep unrelated features or fixes in separate commits. If a request includes two unrelated features, complete, validate, and commit each one before starting the next.
 - Stage only changes belonging to the current task. Leave unrelated pre-existing changes out of the commit.
 - Use a concise commit message that describes the change.
+- When the user links a repository issue, reference its issue number in the corresponding commit message (for example, `Refs #59`).