diff --git a/docs/api.rst b/docs/api.rst
@@ -1129,43 +1129,3 @@ Python 3.0
 
 There are too many changes compared to Python 2.7, but it's no longer useful
 to document them.
-
-
-Borrow variant
---------------
-
-To ease migration of C extensions to the new C API, a variant is provided
-to return borrowed references rather than strong references.
-
-These functions are only available in ``pythoncapi_compat.h`` and are not
-part of the Python C API.
-
-.. c:function:: PyObject* _Py_StealRef(PyObject *ob)
-
-   Similar to ``Py_DECREF(ob); return ob;``.
-
-.. c:function:: PyObject* _Py_XStealRef(PyObject *ob)
-
-   Similar to ``Py_XDECREF(ob); return ob;``.
-
-.. c:function:: PyFrameObject* _PyThreadState_GetFrameBorrow(PyThreadState *tstate)
-
-   :c:func:`PyThreadState_GetFrame` variant.
-
-   Not available on PyPy nor with the limited C API 3.8 and older.
-
-   Not available on limited C API 3.8 and older.
-
-.. c:function:: PyCodeObject* _PyFrame_GetCodeBorrow(PyFrameObject *frame)
-
-   :c:func:`PyFrame_GetCode` variant.
-
-.. c:function:: PyFrameObject* _PyFrame_GetBackBorrow(PyFrameObject *frame)
-
-   :c:func:`PyFrame_GetBack` variant.
-
-   Not available on PyPy nor with the limited C API.
-
-For example, ``tstate->frame`` can be replaced with
-``_PyThreadState_GetFrameBorrow(tstate)`` to avoid accessing directly
-``PyThreadState.frame`` member.
diff --git a/docs/changelog.rst b/docs/changelog.rst
@@ -7,6 +7,11 @@ Changelog
   * ``PyEval_GetFrameGlobals()``
   * ``PyEval_GetFrameLocals()``
 
+* 2026-10-12: Delete 5 ``Borrow`` functions which were specific to
+  pythoncapi-compat and only used by the removed script
+  ``upgrade_pythoncapi.py``: ``_Py_StealRef()`` ``_Py_XStealRef()``
+  ``_PyThreadState_GetFrameBorrow()`` ``_PyFrame_GetCodeBorrow()``
+  and ``_PyFrame_GetBackBorrow()``.
 * 2026-10-11: Remove the ``upgrade_pythoncapi.py`` script.
 * 2026-10-10: Add ``PyObject_GenericHash()`` and
   ``PyUnicodeWriter_WriteUCS4()`` functions. runtests.py now runs tests in

diff --git a/pythoncapi_compat.h b/pythoncapi_compat.h
@@ -202,15 +202,6 @@ static inline PyCodeObject* PyFrame_GetCode(PyFrameObject *frame)
 }
 #endif
 
-#if !defined(Py_LIMITED_API) || PY_VERSION_HEX >= _Py_PACK_VERSION(3, 9)
-static inline PyCodeObject* _PyFrame_GetCodeBorrow(PyFrameObject *frame)
-{
-    PyCodeObject *code = PyFrame_GetCode(frame);
-    Py_DECREF(code);
-    return code;
-}
-#endif
-
 
 // bpo-40421 added PyFrame_GetBack() to Python 3.9
 #if (PY_VERSION_HEX < _Py_PACK_VERSION(3, 9) \
@@ -222,15 +213,6 @@ static inline PyFrameObject* PyFrame_GetBack(PyFrameObject *frame)
 }
 #endif
 
-#if !defined(PYPY_VERSION) && !defined(Py_LIMITED_API)
-static inline PyFrameObject* _PyFrame_GetBackBorrow(PyFrameObject *frame)
-{
-    PyFrameObject *back = PyFrame_GetBack(frame);
-    Py_XDECREF(back);
-    return back;
-}
-#endif
-
 
 // bpo-40421 added PyFrame_GetLocals() to Python 3.11
 #if (PY_VERSION_HEX < _Py_PACK_VERSION(3, 11) \
@@ -353,17 +335,6 @@ static inline PyFrameObject* PyThreadState_GetFrame(PyThreadState *tstate)
 }
 #endif
 
-#if ((!defined(Py_LIMITED_API) || Py_LIMITED_API+0 >= _Py_PACK_VERSION(3, 9)) \
-     && (!defined(PYPY_VERSION) || PY_VERSION_HEX >= _Py_PACK_VERSION(3, 11)))
-static inline PyFrameObject*
-_PyThreadState_GetFrameBorrow(PyThreadState *tstate)
-{
-    PyFrameObject *frame = PyThreadState_GetFrame(tstate);
-    Py_XDECREF(_PyObject_CAST(frame));
-    return frame;
-}
-#endif
-
 
 // Added to Python 3.9 and limited C API 3.9. On Windows, it's not available
 // before stable ABI 3.10.

diff --git a/tests/test_pythoncapi_compat_cext.c b/tests/test_pythoncapi_compat_cext.c
@@ -208,12 +208,6 @@ test_frame(PyObject *Py_UNUSED(module), PyObject* Py_UNUSED(ignored))
         return _Py_NULL;
     }
 
-    // test _PyThreadState_GetFrameBorrow()
-    Py_ssize_t frame_refcnt = Py_REFCNT(_PyObject_CAST(frame));
-    PyFrameObject *frame2 = _PyThreadState_GetFrameBorrow(tstate);
-    assert(frame2 == frame);
-    assert(Py_REFCNT(_PyObject_CAST(frame)) == frame_refcnt);
-
     // Test issue: the current thread has no code on PyPy
 #ifndef PYPY_VERSION
     // test PyFrame_GetCode()
@@ -223,34 +217,16 @@ test_frame(PyObject *Py_UNUSED(module), PyObject* Py_UNUSED(ignored))
     assert(PyCode_Check(code));
 #endif
 
-    // test _PyFrame_GetCodeBorrow()
-    Py_ssize_t code_refcnt = Py_REFCNT(_PyObject_CAST(code));
-    PyCodeObject *code2 = _PyFrame_GetCodeBorrow(frame);
-    assert(code2 == code);
-    assert(Py_REFCNT(_PyObject_CAST(code)) == code_refcnt);
-    Py_DECREF(code);
 #endif
 
 #if !defined(PYPY_VERSION) && !defined(Py_LIMITED_API)
     // PyFrame_GetBack()
     PyFrameObject* back = PyFrame_GetBack(frame);
     if (back != _Py_NULL) {
         assert(PyFrame_Check(back));
+        Py_DECREF(back);
     }
 
-    // test _PyFrame_GetBackBorrow()
-    if (back != _Py_NULL) {
-        Py_ssize_t back_refcnt = Py_REFCNT(back);
-        PyFrameObject *back2 = _PyFrame_GetBackBorrow(frame);
-        assert(back2 == back);
-        assert(Py_REFCNT(back) == back_refcnt);
-    }
-    else {
-        PyFrameObject *back2 = _PyFrame_GetBackBorrow(frame);
-        assert(back2 == back);
-    }
-    Py_XDECREF(back);
-
     // test PyFrame_GetLocals()
     PyObject *locals = PyFrame_GetLocals(frame);
     assert(locals != _Py_NULL);