diff --git a/Include/unicodeobject.h b/Include/unicodeobject.h
index 9b498ee..131278d 100644
--- a/Include/unicodeobject.h
+++ b/Include/unicodeobject.h
@@ -145,6 +145,8 @@
 # define PyUnicode_AsWideChar PyUnicodeUCS2_AsWideChar
 # define PyUnicode_Compare PyUnicodeUCS2_Compare
 # define PyUnicode_Concat PyUnicodeUCS2_Concat
+# define PyUnicode_Append PyUnicodeUCS2_Append
+# define PyUnicode_AppendAndDel PyUnicodeUCS2_AppendAndDel
 # define PyUnicode_Contains PyUnicodeUCS2_Contains
 # define PyUnicode_Count PyUnicodeUCS2_Count
 # define PyUnicode_Decode PyUnicodeUCS2_Decode
@@ -227,6 +229,8 @@
 # define PyUnicode_AsWideChar PyUnicodeUCS4_AsWideChar
 # define PyUnicode_Compare PyUnicodeUCS4_Compare
 # define PyUnicode_Concat PyUnicodeUCS4_Concat
+# define PyUnicode_Append PyUnicodeUCS4_Append
+# define PyUnicode_AppendAndDel PyUnicodeUCS4_AppendAndDel
 # define PyUnicode_Contains PyUnicodeUCS4_Contains
 # define PyUnicode_Count PyUnicodeUCS4_Count
 # define PyUnicode_Decode PyUnicodeUCS4_Decode
@@ -1020,6 +1024,22 @@
     PyObject *right	 	/* Right string */
     );
 
+/* Concat two strings and put the result in *pleft
+   (sets *pleft to NULL on error) */
+
+PyAPI_FUNC(void) PyUnicode_Append(
+    PyObject **pleft,	 	/* Pointer to left string */
+    PyObject *right	 	/* Right string */
+    );
+
+/* Concat two strings, put the result in *pleft and drop the right object
+   (sets *pleft to NULL on error) */
+
+PyAPI_FUNC(void) PyUnicode_AppendAndDel(
+    PyObject **pleft,	 	/* Pointer to left string */
+    PyObject *right	 	/* Right string */
+    );
+
 /* Split a string giving a list of Unicode strings.
 
    If sep is NULL, splitting will be done at all whitespace