diff --git a/test_module/__test__/object.spec.ts b/test_module/__test__/object.spec.ts
index 865113e5..2cce191f 100644
--- a/test_module/__test__/object.spec.ts
+++ b/test_module/__test__/object.spec.ts
@@ -236,7 +236,7 @@ test('is promise', (t) => {
   t.true(bindings.testIsPromise(Promise.reject().catch(() => {})))
   t.true(
     bindings.testIsPromise(
-      new Promise((resolve) => {
+      new Promise<void>((resolve) => {
         resolve()
       }),
     ),
diff --git a/test_module/__test__/serde/ser.spec.ts b/test_module/__test__/serde/ser.spec.ts
index 24d46fa0..e71c1a8b 100644
--- a/test_module/__test__/serde/ser.spec.ts
+++ b/test_module/__test__/serde/ser.spec.ts
@@ -12,6 +12,7 @@ const testFunc = [
   'make_buff',
   'make_obj',
   'make_map',
+  'make_bytes_struct',
 ]
 
 if (napiVersion >= 6) {
@@ -24,3 +25,10 @@ for (const func of testFunc) {
     t.snapshot(bindings[func]())
   })
 }
+
+test('serialize make_bytes_struct', (t) => {
+  t.deepEqual(bindings.make_bytes_struct(), {
+    code: Buffer.from([0, 1, 2, 3]),
+    map: 'source map',
+  })
+})
diff --git a/test_module/__test__/serde/ser.spec.ts.md b/test_module/__test__/serde/ser.spec.ts.md
index 4c389086..1b511474 100644
--- a/test_module/__test__/serde/ser.spec.ts.md
+++ b/test_module/__test__/serde/ser.spec.ts.md
@@ -72,6 +72,17 @@ Generated by [AVA](https://avajs.dev).
       c: 3,
     }
 
+## serialize make_bytes_struct from bindings
+
+> Snapshot 1
+
+    {
+      code: Buffer @Uint8Array [
+        00010203
+      ],
+      map: 'source map',
+    }
+
 ## serialize make_object from bindings
 
 > Snapshot 1
diff --git a/test_module/__test__/serde/ser.spec.ts.snap b/test_module/__test__/serde/ser.spec.ts.snap
index 4bba6d53..66afca61 100644
Binary files a/test_module/__test__/serde/ser.spec.ts.snap and b/test_module/__test__/serde/ser.spec.ts.snap differ
diff --git a/test_module/src/serde.rs b/test_module/src/serde.rs
index 5ef08954..a6b4e13b 100644
--- a/test_module/src/serde.rs
+++ b/test_module/src/serde.rs
@@ -44,6 +44,13 @@ struct AnObjectTwo {
   r: i128,
 }
 
+#[derive(Serialize, Debug, Deserialize)]
+struct BytesObject<'a> {
+  #[serde(with = "serde_bytes")]
+  code: &'a [u8],
+  map: String,
+}
+
 macro_rules! make_test {
   ($name:ident, $val:expr) => {
     #[js_function]
@@ -104,6 +111,13 @@ const NUMBER_BYTES: &[u8] = &[255u8, 254, 253];
 
 make_test!(make_buff, { serde_bytes::Bytes::new(NUMBER_BYTES) });
 
+make_test!(make_bytes_struct, {
+  BytesObject {
+    code: &[0, 1, 2, 3],
+    map: "source map".to_owned(),
+  }
+});
+
 macro_rules! make_expect {
   ($name:ident, $val:expr, $val_type:ty) => {
     #[js_function(1)]
@@ -189,6 +203,7 @@ pub fn register_js(exports: &mut JsObject) -> Result<()> {
   exports.create_named_method("make_obj", make_obj)?;
   exports.create_named_method("make_object", make_object)?;
   exports.create_named_method("make_map", make_map)?;
+  exports.create_named_method("make_bytes_struct", make_bytes_struct)?;
 
   exports.create_named_method("expect_hello_world", expect_hello_world)?;
   exports.create_named_method("expect_obj", expect_obj)?;