diff --git a/Cargo.lock b/Cargo.lock
index cacec0c468b..eef58c1decb 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -5228,7 +5228,7 @@ dependencies = [
 [[package]]
 name = "mozjs"
 version = "0.14.1"
-source = "git+https://github.com/servo/mozjs#128e1e230a0155ed9395c718184f34bddc045860"
+source = "git+https://github.com/servo/mozjs#9c017973a4bf9186df2335d8c96ed3554b84434e"
 dependencies = [
  "bindgen 0.71.1",
  "cc",
@@ -5239,8 +5239,8 @@ dependencies = [
 
 [[package]]
 name = "mozjs_sys"
-version = "0.128.13-0"
-source = "git+https://github.com/servo/mozjs#128e1e230a0155ed9395c718184f34bddc045860"
+version = "0.128.13-1"
+source = "git+https://github.com/servo/mozjs#9c017973a4bf9186df2335d8c96ed3554b84434e"
 dependencies = [
  "bindgen 0.71.1",
  "cc",
diff --git a/components/script/dom/bindings/structuredclone.rs b/components/script/dom/bindings/structuredclone.rs
index 6047c783189..ae6dd1eac4e 100644
--- a/components/script/dom/bindings/structuredclone.rs
+++ b/components/script/dom/bindings/structuredclone.rs
@@ -20,8 +20,7 @@ use constellation_traits::{
 };
 use js::gc::RootedVec;
 use js::glue::{
-    CopyJSStructuredCloneData, DeleteJSAutoStructuredCloneBuffer, GetLengthOfJSStructuredCloneData,
-    NewJSAutoStructuredCloneBuffer, WriteBytesToJSStructuredCloneData,
+    CopyJSStructuredCloneData, GetLengthOfJSStructuredCloneData, WriteBytesToJSStructuredCloneData,
 };
 use js::jsapi::{
     CloneDataPolicy, HandleObject as RawHandleObject, Heap, JS_IsExceptionPending,
@@ -31,7 +30,9 @@ use js::jsapi::{
 };
 use js::jsval::UndefinedValue;
 use js::rust::wrappers::{JS_ReadStructuredClone, JS_WriteStructuredClone};
-use js::rust::{CustomAutoRooterGuard, HandleValue, MutableHandleValue};
+use js::rust::{
+    CustomAutoRooterGuard, HandleValue, JSAutoStructuredCloneBufferWrapper, MutableHandleValue,
+};
 use script_bindings::conversions::{IDLInterface, SafeToJSValConvertible};
 use strum::IntoEnumIterator;
 
@@ -599,11 +600,11 @@ pub(crate) fn write(
         let mut sc_writer = StructuredDataWriter::default();
         let sc_writer_ptr = &mut sc_writer as *mut _;
 
-        let scbuf = NewJSAutoStructuredCloneBuffer(
+        let scbuf = JSAutoStructuredCloneBufferWrapper::new(
             StructuredCloneScope::DifferentProcess,
             &STRUCTURED_CLONE_CALLBACKS,
         );
-        let scdata = &mut ((*scbuf).data_);
+        let scdata = &mut ((*scbuf.as_raw_ptr()).data_);
         let policy = CloneDataPolicy {
             allowIntraClusterClonableSharedObjects_: false,
             allowSharedMemoryObjects_: false,
@@ -633,8 +634,6 @@ pub(crate) fn write(
         CopyJSStructuredCloneData(scdata, data.as_mut_ptr());
         data.set_len(nbytes);
 
-        DeleteJSAutoStructuredCloneBuffer(scbuf);
-
         let data = StructuredSerializedData {
             serialized: data,
             ports: sc_writer.ports.take(),
@@ -675,11 +674,11 @@ pub(crate) fn read(
     };
     let sc_reader_ptr = &mut sc_reader as *mut _;
     unsafe {
-        let scbuf = NewJSAutoStructuredCloneBuffer(
+        let scbuf = JSAutoStructuredCloneBufferWrapper::new(
             StructuredCloneScope::DifferentProcess,
             &STRUCTURED_CLONE_CALLBACKS,
         );
-        let scdata = &mut ((*scbuf).data_);
+        let scdata = &mut ((*scbuf.as_raw_ptr()).data_);
 
         WriteBytesToJSStructuredCloneData(
             data.serialized.as_mut_ptr() as *const u8,
@@ -710,8 +709,6 @@ pub(crate) fn read(
             return Err(error);
         }
 
-        DeleteJSAutoStructuredCloneBuffer(scbuf);
-
         let mut message_ports = vec![];
         for reflector in sc_reader.roots.iter() {
             let Ok(message_port) = root_from_object::<MessagePort>(reflector.get(), *cx) else {