diff --git a/serde/src/lib.rs b/serde/src/lib.rs
index e5d40d4b..ce4ccd7e 100644
--- a/serde/src/lib.rs
+++ b/serde/src/lib.rs
@@ -123,6 +123,7 @@
         explicit_auto_deref,
         let_underscore_drop,
         map_err_ignore,
+        new_without_default,
         result_unit_err,
         wildcard_imports,
         // not practical