diff --git a/serde/src/lib.rs b/serde/src/lib.rs
index 0acf0583..61b1af21 100644
--- a/serde/src/lib.rs
+++ b/serde/src/lib.rs
@@ -119,6 +119,7 @@
         // correctly used
         enum_glob_use,
         map_err_ignore,
+        result_unit_err,
         wildcard_imports,
         // not practical
         needless_pass_by_value,
diff --git a/serde_derive_internals/lib.rs b/serde_derive_internals/lib.rs
index ce96383b..5bc76756 100644
--- a/serde_derive_internals/lib.rs
+++ b/serde_derive_internals/lib.rs
@@ -6,6 +6,7 @@
     allow(
         cognitive_complexity,
         redundant_field_names,
+        result_unit_err,
         trivially_copy_pass_by_ref,
         wildcard_in_or_patterns,
         // clippy bug: https://github.com/rust-lang/rust-clippy/issues/5704