diff --git a/deps/v8/tools/gen-postmortem-metadata.py b/deps/v8/tools/gen-postmortem-metadata.py
index 0715b07dc14af7..8724b988f0f2fe 100644
--- a/deps/v8/tools/gen-postmortem-metadata.py
+++ b/deps/v8/tools/gen-postmortem-metadata.py
@@ -259,6 +259,8 @@
     'JSArrayBuffer, byte_length, size_t, kByteLengthOffset',
     'JSArrayBufferView, byte_length, size_t, kByteLengthOffset',
     'JSArrayBufferView, byte_offset, size_t, kByteOffsetOffset',
+    'JSDate, value, Object, kValueOffset',
+    'JSRegExp, source, Object, kSourceOffset',
     'JSTypedArray, external_pointer, uintptr_t, kExternalPointerOffset',
     'JSTypedArray, length, Object, kLengthOffset',
     'Map, instance_size_in_words, char, kInstanceSizeInWordsOffset',