diff --git a/.cargo/audit.toml b/.cargo/audit.toml
new file mode 100644
index 00000000000..4fd083d9481
--- /dev/null
+++ b/.cargo/audit.toml
@@ -0,0 +1,7 @@
+# See https://github.com/rustsec/rustsec/blob/59e1d2ad0b9cbc6892c26de233d4925074b4b97b/cargo-audit/audit.toml.example for example.
+
+[advisories]
+ignore = [
+    # https://github.com/tokio-rs/tokio/issues/4177
+    "RUSTSEC-2020-0159",
+]