diff --git a/.vscode/settings.json b/.vscode/settings.json
index b3468d91..3bcb8389 100644
--- a/.vscode/settings.json
+++ b/.vscode/settings.json
@@ -66,6 +66,7 @@
     "horiz",
     "Hsing",
     "idents",
+    "idna",
     "ignit",
     "impls",
     "InputEvent",
diff --git a/deny.toml b/deny.toml
index 418f9e44..b1159c5e 100644
--- a/deny.toml
+++ b/deny.toml
@@ -18,7 +18,8 @@ allow = ["ISC"]
 # see if it was yanked on or not. So to prevent warnings or failed advisory warnings, you
 # can add the `RUSTSEC...` identifier instead.
 ignore = [
-  "RUSTSEC-2024-0320", # "instant@0.1.13",
-  "RUSTSEC-2024-0384", # "hashbrown@0.15.0",
-  "RUSTSEC-2024-0402", # "yaml-rust@0.4.5",
+  "RUSTSEC-2024-0320", # "instant@0.1.13"
+  "RUSTSEC-2024-0384", # "hashbrown@0.15.0"
+  "RUSTSEC-2024-0402", # "yaml-rust@0.4.5"
+  "RUSTSEC-2024-0421", # "idna v0.5.0"
 ]