diff --git a/README.md b/README.md
index 47dbfb6e9a97bb4ec83d0b4add730ed159660f41..72cc8b19bb3a84d7abb8038a90e45e4149f9dedd 100644
--- a/README.md
+++ b/README.md
@@ -55,3 +55,14 @@ extensions used etc.  When doing so, you must give the trace a unique
 filename (such as moving it to a `-v2`, `-v3`, etc.) because Mesa's
 trace testing infrastructure caches traces by filename instead of git
 hash or file hash.
+
+## Merging changes:
+
+- Get an ack or r-b statement on the MR from someone before assigning
+  to Marge-bot.
+
+Since this is a repo with limited impact on other developers when we
+add new traces, we want the barrier to entry to be low.  No need to
+git commit --amend in the r-b statement, or get broad consensus.  If
+you're modifying an existing trace, you should probably get an ack
+from the original committer.