diff --git a/Cargo.toml b/Cargo.toml
index 8bbf21f..b113dc3 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -29,3 +29,6 @@ arch_z80 = []
 
 [badges]
 maintenance = { status = "passively-maintained" }
+
+[lints.rust]
+unexpected_cfgs = { level = "warn", check-cfg = ['cfg(feature, values("rust_1_40", "cargo-clippy"))'] }