diff --git a/.duplicate-id-guard b/.duplicate-id-guard
index 32b07b8..21f25ec 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.
-896fe621517189d3659f67c322963f7654e5c7abba7b4e3a055b7922cde0746d  -
+c99c5d02ebad78e89d8918670602c37b538a99d8f9efd6aba65c468ad9e64a00  -
diff --git a/crates/arenavec/RUSTSEC-0000-0000.md b/crates/arenavec/RUSTSEC-2021-0040.md
similarity index 96%
rename from crates/arenavec/RUSTSEC-0000-0000.md
rename to crates/arenavec/RUSTSEC-2021-0040.md
index f71a26a..692f632 100644
--- a/crates/arenavec/RUSTSEC-0000-0000.md
+++ b/crates/arenavec/RUSTSEC-2021-0040.md
@@ -1,6 +1,6 @@
 ```toml
 [advisory]
-id = "RUSTSEC-0000-0000"
+id = "RUSTSEC-2021-0040"
 package = "arenavec"
 date = "2021-01-12"
 url = "https://github.com/ibabushkin/arenavec/issues/1"