diff --git a/justfile b/justfile
index dc64477..67cc162 100644
--- a/justfile
+++ b/justfile
@@ -77,6 +77,11 @@ test:
 mdns-vendor-test:
     cargo test --manifest-path vendor/mdns-sd/Cargo.toml --all-targets --all-features
 
+# Check both locked backend and frontend dependency graphs.
+security-audit:
+    cargo audit
+    cd crates/lanspread-tauri-deno-ts && deno audit --lock deno.lock --frozen-lockfile
+
 # Regenerate the committed acceptance catalogs from their fixture packages.
 fixture-catalogs:
     cargo run -p lanspread-compat --bin lanspread-fixture-catalog -- \