diff --git a/crates/js-sys/src/lib.rs b/crates/js-sys/src/lib.rs
index 487fc095..8b4e2854 100644
--- a/crates/js-sys/src/lib.rs
+++ b/crates/js-sys/src/lib.rs
@@ -3401,7 +3401,7 @@ pub mod Intl {
         /// that enable language sensitive string comparison.
         ///
         /// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Collator
-        #[wasm_bindgen(js_namespace = Intl)]
+        #[wasm_bindgen(extends = Object, js_namespace = Intl)]
         #[derive(Clone, Debug)]
         pub type Collator;
 
diff --git a/crates/js-sys/tests/wasm/Intl.rs b/crates/js-sys/tests/wasm/Intl.rs
index 6fc8add6..a22b75e4 100644
--- a/crates/js-sys/tests/wasm/Intl.rs
+++ b/crates/js-sys/tests/wasm/Intl.rs
@@ -35,6 +35,10 @@ fn collator() {
 
     let a = Intl::Collator::supported_locales_of(&locales, &opts);
     assert!(a.is_instance_of::<Array>());
+
+    assert!(c.is_instance_of::<Intl::Collator>());
+    assert!(c.is_instance_of::<Object>());
+    let _: &Object = c.as_ref();
 }
 
 #[wasm_bindgen_test]