diff --git a/CHANGES.current b/CHANGES.current
index 7e7232383..616d973c9 100644
--- a/CHANGES.current
+++ b/CHANGES.current
@@ -7,6 +7,10 @@ the issue number to the end of the URL: https://github.com/swig/swig/issues/
 Version 4.1.0 (in progress)
 ===========================
 
+2022-08-01: wsfulton
+            [Python] Add initialisers for additional members in PyHeapTypeObject
+            (builtin mode) for Python-3.11 - _ht_tpname, _spec_cache.
+
 2022-07-30: wsfulton
             C++20 has deprecated std::basic_string<>::reserve() and the C++11 method
             std::basic_string<>::shrink_to_fit() is a replacement that can be used.
diff --git a/Lib/python/builtin.swg b/Lib/python/builtin.swg
index f31fccf1e..5cff6835f 100644
--- a/Lib/python/builtin.swg
+++ b/Lib/python/builtin.swg
@@ -426,7 +426,7 @@ SwigPyBuiltin_ThisClosure (PyObject *self, void *SWIGUNUSEDPARM(closure)) {
 SWIGINTERN void
 SwigPyBuiltin_SetMetaType (PyTypeObject *type, PyTypeObject *metatype)
 {
-#if PY_VERSION_HEX >= 0x030900A4
+#if PY_VERSION_HEX >= 0x030900a4
     Py_SET_TYPE(type, metatype);
 #else
     Py_TYPE(type) = metatype;
diff --git a/Source/Modules/python.cxx b/Source/Modules/python.cxx
index 9aac91601..2d2ac4f5f 100644
--- a/Source/Modules/python.cxx
+++ b/Source/Modules/python.cxx
@@ -4348,9 +4348,20 @@ public:
     printSlot(f, getSlot(n, "feature:python:ht_cached_keys"), "ht_cached_keys");
     Printv(f, "#endif\n", NIL);
 
+    // PyObject *ht_module;
     Printv(f, "#if PY_VERSION_HEX >= 0x03090000\n", NIL);
     printSlot(f, getSlot(n, "feature:python:ht_module"), "ht_module", "PyObject *");
     Printv(f, "#endif\n", NIL);
+
+    // char *_ht_tpname;
+    Printv(f, "#if PY_VERSION_HEX >= 0x030b0000\n", NIL);
+    printSlot(f, getSlot(n, "feature:python:_ht_tpname"), "_ht_tpname", "char *");
+
+    // struct _specialization_cache _spec_cache;
+    Printf(f, "  {\n");
+    printSlot(f, getSlot(n, "feature:python:getitem"), "getitem", "PyObject *");
+    Printf(f, "  }\n");
+    Printv(f, "#endif\n", NIL);
     Printf(f, "};\n\n");
 
     String *clientdata = NewString("");