diff --git a/crates/js-sys/src/lib.rs b/crates/js-sys/src/lib.rs
index 7bdcc9d0..93b0923a 100644
--- a/crates/js-sys/src/lib.rs
+++ b/crates/js-sys/src/lib.rs
@@ -2592,6 +2592,7 @@ extern "C" {
 // Uint8ClampedArray
 #[wasm_bindgen]
 extern "C" {
+    #[wasm_bindgen(extends = Object)]
     #[derive(Clone, Debug)]
     pub type Uint8ClampedArray;
 
diff --git a/crates/js-sys/tests/wasm/TypedArray.rs b/crates/js-sys/tests/wasm/TypedArray.rs
index ac9dcaba..458feca8 100644
--- a/crates/js-sys/tests/wasm/TypedArray.rs
+++ b/crates/js-sys/tests/wasm/TypedArray.rs
@@ -6,13 +6,14 @@ use js_sys::*;
 macro_rules! each {
     ($m:ident) => (
         $m!(Uint8Array);
+        $m!(Uint8ClampedArray);
     )
 }
 
 macro_rules! test_inheritence {
     ($arr:ident) => ({
         let arr = $arr::new(&JsValue::undefined());
-        assert!(arr.is_instance_of::<Uint8Array>());
+        assert!(arr.is_instance_of::<$arr>());
         assert!(arr.is_instance_of::<Object>());        
     })
 }