diff --git a/docs/changelog.rst b/docs/changelog.rst
index ec263a3..3500bd5 100644
--- a/docs/changelog.rst
+++ b/docs/changelog.rst
@@ -1,6 +1,32 @@
 Changelog
 =========
 
+* 2024-12-16: Add ``structmember.h`` constants:
+
+  * ``Py_T_BOOL``
+  * ``Py_T_BYTE``
+  * ``Py_T_CHAR``
+  * ``Py_T_DOUBLE``
+  * ``Py_T_FLOAT``
+  * ``Py_T_INT``
+  * ``Py_T_LONGLONG``
+  * ``Py_T_LONG``
+  * ``Py_T_OBJECT_EX``
+  * ``Py_T_PYSSIZET``
+  * ``Py_T_SHORT``
+  * ``Py_T_STRING_INPLACE``
+  * ``Py_T_STRING``
+  * ``Py_T_UBYTE``
+  * ``Py_T_UINT``
+  * ``Py_T_ULONGLONG``
+  * ``Py_T_ULONG``
+  * ``Py_T_USHORT``
+  * ``_Py_T_NONE``
+  * ``_Py_T_OBJECT``
+  * ``Py_AUDIT_READ``
+  * ``Py_READONLY``
+  * ``_Py_WRITE_RESTRICTED``
+
 * 2024-12-13: Add functions and structs:
 
   * ``PyLongLayout``
diff --git a/pythoncapi_compat.h b/pythoncapi_compat.h
index 5e22e7d..cee282d 100644
--- a/pythoncapi_compat.h
+++ b/pythoncapi_compat.h
@@ -24,6 +24,9 @@ extern "C" {
 #if PY_VERSION_HEX < 0x030b00B4 && !defined(PYPY_VERSION)
 #  include "frameobject.h"        // PyFrameObject, PyFrame_GetBack()
 #endif
+#if PY_VERSION_HEX < 0x030C00A3
+#  include <structmember.h>       // T_SHORT, READONLY
+#endif
 
 
 #ifndef _Py_CAST
@@ -1899,6 +1902,37 @@ PyLongWriter_Finish(PyLongWriter *writer)
 #endif
 
 
+#if PY_VERSION_HEX < 0x030C00A3
+#  define Py_T_SHORT      T_SHORT
+#  define Py_T_INT        T_INT
+#  define Py_T_LONG       T_LONG
+#  define Py_T_FLOAT      T_FLOAT
+#  define Py_T_DOUBLE     T_DOUBLE
+#  define Py_T_STRING     T_STRING
+#  define _Py_T_OBJECT    T_OBJECT
+#  define Py_T_CHAR       T_CHAR
+#  define Py_T_BYTE       T_BYTE
+#  define Py_T_UBYTE      T_UBYTE
+#  define Py_T_USHORT     T_USHORT
+#  define Py_T_UINT       T_UINT
+#  define Py_T_ULONG      T_ULONG
+#  define Py_T_STRING_INPLACE  T_STRING_INPLACE
+#  define Py_T_BOOL       T_BOOL
+#  define Py_T_OBJECT_EX  T_OBJECT_EX
+#  define Py_T_LONGLONG   T_LONGLONG
+#  define Py_T_ULONGLONG  T_ULONGLONG
+#  define Py_T_PYSSIZET   T_PYSSIZET
+
+#  if PY_VERSION_HEX >= 0x03000000 && !defined(PYPY_VERSION)
+#    define _Py_T_NONE      T_NONE
+#  endif
+
+#  define Py_READONLY            READONLY
+#  define Py_AUDIT_READ          READ_RESTRICTED
+#  define _Py_WRITE_RESTRICTED   PY_WRITE_RESTRICTED
+#endif
+
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/tests/test_pythoncapi_compat_cext.c b/tests/test_pythoncapi_compat_cext.c
index 28663d2..aff19e0 100644
--- a/tests/test_pythoncapi_compat_cext.c
+++ b/tests/test_pythoncapi_compat_cext.c
@@ -2063,6 +2063,40 @@ test_long_stdint(PyObject *Py_UNUSED(module), PyObject *Py_UNUSED(args))
 }
 
 
+static PyObject *
+test_structmember(PyObject *Py_UNUSED(module), PyObject *Py_UNUSED(args))
+{
+    assert(Py_T_SHORT >= 0);
+    assert(Py_T_INT >= 0);
+    assert(Py_T_LONG >= 0);
+    assert(Py_T_FLOAT >= 0);
+    assert(Py_T_DOUBLE >= 0);
+    assert(Py_T_STRING >= 0);
+    assert(_Py_T_OBJECT >= 0);
+    assert(Py_T_CHAR >= 0);
+    assert(Py_T_BYTE >= 0);
+    assert(Py_T_UBYTE >= 0);
+    assert(Py_T_USHORT >= 0);
+    assert(Py_T_UINT >= 0);
+    assert(Py_T_ULONG >= 0);
+    assert(Py_T_STRING_INPLACE >= 0);
+    assert(Py_T_BOOL >= 0);
+    assert(Py_T_OBJECT_EX >= 0);
+    assert(Py_T_LONGLONG >= 0);
+    assert(Py_T_ULONGLONG >= 0);
+    assert(Py_T_PYSSIZET >= 0);
+#if PY_VERSION_HEX >= 0x03000000 && !defined(PYPY_VERSION)
+    assert(_Py_T_NONE >= 0);
+#endif
+
+    assert(Py_READONLY >= 0);
+    assert(Py_AUDIT_READ >= 0);
+    assert(_Py_WRITE_RESTRICTED >= 0);
+
+    Py_RETURN_NONE;
+}
+
+
 static struct PyMethodDef methods[] = {
     {"test_object", test_object, METH_NOARGS, _Py_NULL},
     {"test_py_is", test_py_is, METH_NOARGS, _Py_NULL},
@@ -2109,6 +2143,7 @@ static struct PyMethodDef methods[] = {
     {"test_bytes", test_bytes, METH_NOARGS, _Py_NULL},
     {"test_iter", test_iter, METH_NOARGS, _Py_NULL},
     {"test_long_stdint", test_long_stdint, METH_NOARGS, _Py_NULL},
+    {"test_structmember", test_structmember, METH_NOARGS, _Py_NULL},
     {_Py_NULL, _Py_NULL, 0, _Py_NULL}
 };