diff --git a/CHANGELOG.md b/CHANGELOG.md
index e16874f9..0c66fbf3 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -15,6 +15,8 @@ This project adheres to [Semantic Versioning](https://semver.org/).
 
 ### Deprecated
 
+- Deprecate `Parser::setCharset()` and `Parser::getCharset()` (#703)
+
 ### Removed
 
 ### Fixed
diff --git a/src/Parser.php b/src/Parser.php
index e582cfab..d653b3a8 100644
--- a/src/Parser.php
+++ b/src/Parser.php
@@ -35,6 +35,8 @@ public function __construct($sText, Settings $oParserSettings = null, $iLineNo =
      * @param string $sCharset
      *
      * @return void
+     *
+     * @deprecated will be removed in version 9.0.0 with #687
      */
     public function setCharset($sCharset)
     {
@@ -45,6 +47,8 @@ public function setCharset($sCharset)
      * Returns the charset that is used if the CSS does not contain an `@charset` declaration.
      *
      * @return void
+     *
+     * @deprecated will be removed in version 9.0.0 with #687
      */
     public function getCharset()
     {