diff --git a/_ruamel_yaml.c b/_ruamel_yaml.c
index c81694a..587853c 100644
--- a/_ruamel_yaml.c
+++ b/_ruamel_yaml.c
@@ -496,6 +496,13 @@ static CYTHON_INLINE void * PyThread_tss_get(Py_tss_t *key) {
 #ifndef PySet_CheckExact
   #define PySet_CheckExact(obj)        (Py_TYPE(obj) == &PySet_Type)
 #endif
+#if PY_VERSION_HEX >= 0x030900A4
+  #define __Pyx_SET_REFCNT(obj, refcnt) Py_SET_REFCNT(obj, refcnt)
+  #define __Pyx_SET_SIZE(obj, size) Py_SET_SIZE(obj, size)
+#else
+  #define __Pyx_SET_REFCNT(obj, refcnt) Py_SET_REFCNT(obj) =(refcnt)
+  #define __Pyx_SET_SIZE(obj, size) Py_SET_SIZE(obj) = (size)
+#endif
 #if CYTHON_ASSUME_SAFE_MACROS
   #define __Pyx_PySequence_SIZE(seq)  Py_SIZE(seq)
 #else
@@ -23874,9 +23881,9 @@ static void __pyx_tp_dealloc_12_ruamel_yaml_CParser(PyObject *o) {
   {
     PyObject *etype, *eval, *etb;
     PyErr_Fetch(&etype, &eval, &etb);
-    ++Py_REFCNT(o);
+    __Pyx_SET_REFCNT(o, PyREFCNT(o) + 1);
     __pyx_pw_12_ruamel_yaml_7CParser_3__dealloc__(o);
-    --Py_REFCNT(o);
+    __Pyx_SET_REFCNT(o, PyREFCNT(o) - 1);
     PyErr_Restore(etype, eval, etb);
   }
   Py_CLEAR(p->stream);
@@ -24047,9 +24054,9 @@ static void __pyx_tp_dealloc_12_ruamel_yaml_CEmitter(PyObject *o) {
   {
     PyObject *etype, *eval, *etb;
     PyErr_Fetch(&etype, &eval, &etb);
-    ++Py_REFCNT(o);
+    __Pyx_SET_REFCNT(o, PyREFCNT(o) + 1);
     __pyx_pw_12_ruamel_yaml_8CEmitter_3__dealloc__(o);
-    --Py_REFCNT(o);
+    __Pyx_SET_REFCNT(o, PyREFCNT(o) - 1);
     PyErr_Restore(etype, eval, etb);
   }
   Py_CLEAR(p->stream);