diff --git a/crates/mdbook/RUSTSEC-0000-0000.md b/crates/mdbook/RUSTSEC-2021-0001.md
similarity index 98%
rename from crates/mdbook/RUSTSEC-0000-0000.md
rename to crates/mdbook/RUSTSEC-2021-0001.md
index b951c96..2dd4322 100644
--- a/crates/mdbook/RUSTSEC-0000-0000.md
+++ b/crates/mdbook/RUSTSEC-2021-0001.md
@@ -1,6 +1,6 @@
 ```toml
 [advisory]
-id = "RUSTSEC-0000-0000"
+id = "RUSTSEC-2021-0001"
 package = "mdbook"
 date = "2021-01-04"
 url = "https://groups.google.com/g/rustlang-security-announcements/c/3-sO6of29O0"