diff --git a/crates/anymap/RUSTSEC-0000-0000.md b/crates/anymap/RUSTSEC-0000-0000.md
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+```toml
+[advisory]
+id = "RUSTSEC-0000-0000"
+package = "anymap"
+date = "2021-05-07"
+informational = "unmaintained"
+url = "https://github.com/chris-morgan/anymap/issues/37"
+[versions]
+patched = []
+unaffected = []
+```
+
+# anymap is unmaintained.
+
+The `anymap` crate does not appear to be maintained, and the most recent
+published version 0.12.1 includes a soundness bug. This has been
+[fixed](https://github.com/chris-morgan/anymap/pull/32) a few years ago, but
+was never released.