diff --git a/.cargo/audit.toml b/.cargo/audit.toml
index 5b68fd1d..9ffed5b2 100644
--- a/.cargo/audit.toml
+++ b/.cargo/audit.toml
@@ -2,5 +2,11 @@
 ignore = [
   "RUSTSEC-2025-0140", # gix-date UTF-8 contract issue dependency of cargo-generate
   "RUSTSEC-2026-0001", # rkyv undefined behavior on OOM dependency of byte-unit
-]
 
+  # Unmaintained crates (transitive dependencies)
+  "RUSTSEC-2021-0127", # serde_cbor - dependency of ic-agent/ic-transport-types
+  "RUSTSEC-2024-0384", # instant - dependency of backoff, cached, parking_lot, rhai
+  "RUSTSEC-2024-0388", # derivative - dependency of ic-asset
+  "RUSTSEC-2024-0436", # paste - dependency of candid, cargo-generate
+  "RUSTSEC-2025-0012", # backoff - dependency of ic-agent, ic-asset
+]