diff --git a/release-notes/README.md b/release-notes/README.md
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+# Release Notes
+
+Create one Markdown file per release tag, named exactly after the version:
+
+```text
+release-notes/1.2.0.md
+release-notes/1.2.1.md
+```
+
+When a version tag is pushed, the release workflow uses the matching file as the GitHub release description. The file must be committed before the tag is pushed.