diff --git a/.duplicate-id-guard b/.duplicate-id-guard
index 6f6daff95..983d3fe40 100644
--- a/.duplicate-id-guard
+++ b/.duplicate-id-guard
@@ -1,3 +1,3 @@
 This file causes merge conflicts if two ID assignment jobs run concurrently.
 This prevents duplicate ID assignment due to a race between those jobs.
-6fcf0d7ce15dad376355c2825ea671b41500439886e4e24f5b6b8bde79956a48  -
+00640e38efbc8e6b3b5ad1923156920ca7fde3e74dd382b3c77ccc286e2f75f1  -
diff --git a/crates/brotli-sys/RUSTSEC-0000-0000.md b/crates/brotli-sys/RUSTSEC-2021-0131.md
similarity index 97%
rename from crates/brotli-sys/RUSTSEC-0000-0000.md
rename to crates/brotli-sys/RUSTSEC-2021-0131.md
index 2093b274f..cc7c90bd3 100644
--- a/crates/brotli-sys/RUSTSEC-0000-0000.md
+++ b/crates/brotli-sys/RUSTSEC-2021-0131.md
@@ -1,6 +1,6 @@
 ```toml
 [advisory]
-id = "RUSTSEC-0000-0000"
+id = "RUSTSEC-2021-0131"
 
 package = "brotli-sys"
 date = "2021-12-20"