diff --git a/dtool/src/interrogatedb/py_compat.h b/dtool/src/interrogatedb/py_compat.h
index a1ec1958ab..4b58a9e3b8 100644
--- a/dtool/src/interrogatedb/py_compat.h
+++ b/dtool/src/interrogatedb/py_compat.h
@@ -287,6 +287,77 @@ INLINE bool PyLong_IsNonNegative(PyObject *value) {
 #  define PyLong_AsInt(x) (_PyLong_AsInt(x))
 #endif
 
+#if PY_VERSION_HEX < 0x030D00A1
+ALWAYS_INLINE int
+PyModule_Add(PyObject *mod, const char *name, PyObject *value) {
+  int res = PyModule_AddObjectRef(mod, name, value);
+  Py_XDECREF(value);
+  return res;
+}
+#endif
+
+#if PY_VERSION_HEX < 0x030D00A1
+INLINE int
+PyDict_GetItemRef(PyObject *mp, PyObject *key, PyObject **result) {
+#if PY_MAJOR_VERSION >= 3
+  PyObject *item = PyDict_GetItemWithError(mp, key);
+#else
+  PyObject *item = _PyDict_GetItemWithError(mp, key);
+#endif
+  if (item != nullptr) {
+    *result = Py_NewRef(item);
+    return 1;
+  }
+  *result = nullptr;
+  return PyErr_Occurred() ? -1 : 0;
+}
+
+INLINE int
+PyDict_GetItemStringRef(PyObject *mp, const char *key, PyObject **result) {
+  PyObject *item = nullptr;
+#if PY_MAJOR_VERSION >= 3
+  PyObject *key_obj = PyUnicode_FromString(key);
+  item = key_obj ? PyDict_GetItemWithError(mp, key_obj) : nullptr;
+#else
+  PyObject *key_obj = PyString_FromString(key);
+  item = key_obj ? _PyDict_GetItemWithError(mp, key_obj) : nullptr;
+#endif
+  Py_DECREF(key_obj);
+  if (item != nullptr) {
+    *result = Py_NewRef(item);
+    return 1;
+  }
+  *result = nullptr;
+  return PyErr_Occurred() ? -1 : 0;
+}
+#endif
+
+#if PY_VERSION_HEX >= 0x03050200 && PY_VERSION_HEX < 0x030D00A1
+#  define PyThreadState_GetUnchecked() (_PyThreadState_UncheckedGet())
+#endif
+
+#if PY_VERSION_HEX < 0x030D00A2
+#  define PyList_Extend(list, iterable) (PyList_SetSlice((list), PY_SSIZE_T_MAX, PY_SSIZE_T_MAX, (iterable)))
+#  define PyList_Clear(list) (PyList_SetSlice((list), 0, PY_SSIZE_T_MAX, nullptr))
+#endif
+
+#if PY_VERSION_HEX < 0x030D00A4
+#  define PyList_GetItemRef(op, index) (Py_XNewRef(PyList_GetItem((op), (index))))
+#endif
+
+#if PY_VERSION_HEX < 0x030D00B3
+#  define Py_BEGIN_CRITICAL_SECTION(op) {
+#  define Py_END_CRITICAL_SECTION() }
+#  define Py_BEGIN_CRITICAL_SECTION2(a, b) {
+#  define Py_END_CRITICAL_SECTION2() }
+#endif
+
+/* Python 3.14 */
+
+#if PY_VERSION_HEX < 0x030E00A8
+#  define PyUnstable_Object_IsUniquelyReferenced(op) (Py_REFCNT((op)) == 1)
+#endif
+
 /* Other Python implementations */
 
 // _PyErr_OCCURRED is an undocumented macro version of PyErr_Occurred.