diff --git a/crates/js-sys/src/lib.rs b/crates/js-sys/src/lib.rs
index e0b1dd25a27..1f13a3fdcaf 100644
--- a/crates/js-sys/src/lib.rs
+++ b/crates/js-sys/src/lib.rs
@@ -5854,9 +5854,9 @@ arrays! {
 
     /// `BigInt64Array()`
     /// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/BigInt64Array
-    BigInt64Array: BigInt,
+    BigInt64Array: i64,
 
     /// `BigUint64Array()`
     /// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/BigUint64Array
-    BigUint64Array: BigInt,
+    BigUint64Array: u64,
 }
diff --git a/crates/js-sys/tests/wasm/Array.js b/crates/js-sys/tests/wasm/Array.js
index 8810bd9db88..f4d6ab71382 100644
--- a/crates/js-sys/tests/wasm/Array.js
+++ b/crates/js-sys/tests/wasm/Array.js
@@ -1,6 +1,7 @@
 // Used for `Array.rs` tests
-exports.populate_array =  function(arr, start, len) {
+exports.populate_array = function(arr, start, len) {
+  var isBigInt = typeof(arr[0]) === "bigint";
   for (i = 0; i < len; i++) {
-    arr[i] = start + i;
+    arr[i] = isBigInt ? BigInt(start + i) : start + i;
   }
 };
diff --git a/crates/js-sys/tests/wasm/Array.rs b/crates/js-sys/tests/wasm/Array.rs
index 9554f39f711..e498c2cc0a9 100644
--- a/crates/js-sys/tests/wasm/Array.rs
+++ b/crates/js-sys/tests/wasm/Array.rs
@@ -594,6 +594,15 @@ fn Int32Array_view_mut_raw() {
     test_array_view_mut_raw(js_sys::Int32Array::view_mut_raw, i32::from, JsValue::from);
 }
 
+#[wasm_bindgen_test]
+fn BigInt64Array_view_mut_raw() {
+    test_array_view_mut_raw(
+        js_sys::BigInt64Array::view_mut_raw,
+        i64::from,
+        JsValue::from,
+    );
+}
+
 #[wasm_bindgen_test]
 fn Uint8Array_view_mut_raw() {
     test_array_view_mut_raw(js_sys::Uint8Array::view_mut_raw, u8::from, JsValue::from);
@@ -618,6 +627,15 @@ fn Uint32Array_view_mut_raw() {
     test_array_view_mut_raw(js_sys::Uint32Array::view_mut_raw, u32::from, JsValue::from);
 }
 
+#[wasm_bindgen_test]
+fn BigUint64Array_view_mut_raw() {
+    test_array_view_mut_raw(
+        js_sys::BigUint64Array::view_mut_raw,
+        u64::from,
+        JsValue::from,
+    );
+}
+
 #[wasm_bindgen_test]
 fn Float32Array_view_mut_raw() {
     test_array_view_mut_raw(js_sys::Float32Array::view_mut_raw, f32::from, JsValue::from);