diff --git a/include/libxml/parser.h b/include/libxml/parser.h
index 6af43ffe..950ebe32 100644
--- a/include/libxml/parser.h
+++ b/include/libxml/parser.h
@@ -828,9 +828,11 @@ XMLPUBFUN void
 /*
  * Input functions
  */
+XML_DEPRECATED
 XMLPUBFUN int
 		xmlParserInputRead	(xmlParserInputPtr in,
 					 int len);
+XML_DEPRECATED
 XMLPUBFUN int
 		xmlParserInputGrow	(xmlParserInputPtr in,
 					 int len);
diff --git a/include/libxml/parserInternals.h b/include/libxml/parserInternals.h
index ce8dbd1f..ab512499 100644
--- a/include/libxml/parserInternals.h
+++ b/include/libxml/parserInternals.h
@@ -582,6 +582,7 @@ XMLPUBFUN int			xmlCopyChar		(int len,
 						 xmlChar *out,
 						 int val);
 XMLPUBFUN void			xmlNextChar		(xmlParserCtxtPtr ctxt);
+XML_DEPRECATED
 XMLPUBFUN void			xmlParserInputShrink	(xmlParserInputPtr in);
 
 /*
diff --git a/parserInternals.c b/parserInternals.c
index bcf120a9..90c428d1 100644
--- a/parserInternals.c
+++ b/parserInternals.c
@@ -441,6 +441,8 @@ xmlParserShrink(xmlParserCtxtPtr ctxt) {
  * xmlParserInputShrink:
  * @in:  an XML parser input
  *
+ * DEPRECATED: Don't use.
+ *
  * This function removes used input for the parser.
  */
 void