diff --git a/crates/proc-macro-error/RUSTSEC-2024-0370.md b/crates/proc-macro-error/RUSTSEC-2024-0370.md
index 307fb34f8..b304231b4 100644
--- a/crates/proc-macro-error/RUSTSEC-2024-0370.md
+++ b/crates/proc-macro-error/RUSTSEC-2024-0370.md
@@ -19,5 +19,4 @@ proc-macro-error also depends on `syn 1.x`, which may be bringing duplicate depe
 ## Possible Alternative(s)
 
 - [manyhow](https://crates.io/crates/manyhow)
-- [proc-macro-error2](https://crates.io/crates/proc-macro-error2)
 - [proc-macro2-diagnostics](https://github.com/SergioBenitez/proc-macro2-diagnostics)
\ No newline at end of file
diff --git a/crates/proc-macro-error2/RUSTSEC-0000-0000.md b/crates/proc-macro-error2/RUSTSEC-0000-0000.md
new file mode 100644
index 000000000..a568659a2
--- /dev/null
+++ b/crates/proc-macro-error2/RUSTSEC-0000-0000.md
@@ -0,0 +1,22 @@
+```toml
+[advisory]
+id = "RUSTSEC-0000-0000"
+package = "proc-macro-error2"
+date = "2026-06-07"
+informational = "unmaintained"
+url = "https://github.com/GnomedDev/proc-macro-error-2/issues/17"
+
+[versions]
+patched = []
+```
+
+# proc-macro-error2 is unmaintained
+
+The author of `proc-macro-error2` has [confirmed](https://github.com/GnomedDev/proc-macro-error-2/issues/17#issuecomment-4643215473) that the crate is no longer maintained and recommends that users migrate away from it.
+
+`proc-macro-error2` was originally created as a maintained fork of [`proc-macro-error`](https://crates.io/crates/proc-macro-error) (see [RUSTSEC-2024-0370](https://rustsec.org/advisories/RUSTSEC-2024-0370)). Both the original crate and this fork are now unmaintained.
+
+## Possible Alternative(s)
+
+- [manyhow](https://crates.io/crates/manyhow)
+- [proc-macro2-diagnostics](https://github.com/SergioBenitez/proc-macro2-diagnostics)