diff --git a/test/v8-updates/test-postmortem-metadata.js b/test/v8-updates/test-postmortem-metadata.js
index 81fc21aa6a10bb..cce4a4d2279652 100644
--- a/test/v8-updates/test-postmortem-metadata.js
+++ b/test/v8-updates/test-postmortem-metadata.js
@@ -64,11 +64,11 @@ function getExpectedSymbols() {
     'v8dbg_class_FixedArray__data__uintptr_t',
     'v8dbg_class_FixedArrayBase__length__SMI',
     'v8dbg_class_FixedTypedArrayBase__base_pointer__Object',
-    'v8dbg_class_FixedTypedArrayBase__external_pointer__Object',
+    'v8dbg_class_FixedTypedArrayBase__external_pointer__uintptr_t',
     'v8dbg_class_HeapNumber__value__double',
     'v8dbg_class_HeapObject__map__Map',
     'v8dbg_class_JSArray__length__Object',
-    'v8dbg_class_JSArrayBuffer__backing_store__Object',
+    'v8dbg_class_JSArrayBuffer__backing_store__uintptr_t',
     'v8dbg_class_JSArrayBuffer__byte_length__size_t',
     'v8dbg_class_JSArrayBufferView__buffer__Object',
     'v8dbg_class_JSArrayBufferView__byte_length__size_t',
@@ -84,7 +84,7 @@ function getExpectedSymbols() {
     'v8dbg_class_Map__constructor_or_backpointer__Object',
     'v8dbg_class_Map__inobject_properties_start_or_constructor_function_index__char',
     'v8dbg_class_Map__instance_type__uint16_t',
-    'v8dbg_class_Map__raw_instance_descriptors__DescriptorArray',
+    'v8dbg_class_Map__instance_descriptors_offset',
     'v8dbg_class_Map__instance_size_in_words__char',
     'v8dbg_class_Oddball__kind_offset__int',
     'v8dbg_class_Script__line_ends__Object',
@@ -179,7 +179,10 @@ function getExpectedSymbols() {
     'v8dbg_OddballUndefined',
     'v8dbg_OddballUninitialized',
     'v8dbg_OneByteStringTag',
-    'v8dbg_PointerSizeLog2',
+    'v8dbg_SystemPointerSize',
+    'v8dbg_SystemPointerSizeLog2',
+    'v8dbg_TaggedSize',
+    'v8dbg_TaggedSizeLog2',
     'v8dbg_SeqStringTag',
     'v8dbg_SlicedStringTag',
     'v8dbg_SmiShiftSize',