diff --git a/README.md b/README.md
index a60230a..65c1c42 100644
--- a/README.md
+++ b/README.md
@@ -62,3 +62,5 @@ Read [`AGENTS.md`](AGENTS.md) first.
 
 MIT. Dataset and fixture source attribution is in
 [`docs/source-attribution/README.md`](docs/source-attribution/README.md).
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+Probe line.