diff --git a/CHANGELOG.md b/CHANGELOG.md
index 08eb305af..e0b95a165 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -11,6 +11,7 @@ This project adheres to [Semantic Versioning](https://semver.org/).
 
 ### Changed
 
+- Mark parsing-related methods of most CSS elements as `@internal` (#90)
 - Mark `OutputFormat::nextLevel()` as `@internal` (#901)
 - Make all non-private properties `@internal` (#886)
 
diff --git a/src/CSSList/CSSList.php b/src/CSSList/CSSList.php
index d0a8bbbce..5b8f41d51 100644
--- a/src/CSSList/CSSList.php
+++ b/src/CSSList/CSSList.php
@@ -67,6 +67,8 @@ public function __construct($iLineNo = 0)
      *
      * @throws UnexpectedTokenException
      * @throws SourceException
+     *
+     * @internal since V8.8.0
      */
     public static function parseList(ParserState $oParserState, CSSList $oList)
     {
diff --git a/src/CSSList/Document.php b/src/CSSList/Document.php
index 7d9c6ec0a..f74c89645 100644
--- a/src/CSSList/Document.php
+++ b/src/CSSList/Document.php
@@ -28,6 +28,8 @@ public function __construct($iLineNo = 0)
      * @return Document
      *
      * @throws SourceException
+     *
+     * @internal since V8.8.0
      */
     public static function parse(ParserState $oParserState)
     {
diff --git a/src/Parsing/ParserState.php b/src/Parsing/ParserState.php
index 2427c5e1f..574f60f3f 100644
--- a/src/Parsing/ParserState.php
+++ b/src/Parsing/ParserState.php
@@ -141,6 +141,8 @@ public function setPosition($iPosition)
      * @return string
      *
      * @throws UnexpectedTokenException
+     *
+     * @internal since V8.8.0
      */
     public function parseIdentifier($bIgnoreCase = true)
     {
@@ -172,6 +174,8 @@ public function parseIdentifier($bIgnoreCase = true)
      *
      * @throws UnexpectedEOFException
      * @throws UnexpectedTokenException
+     *
+     * @internal since V8.8.0
      */
     public function parseCharacter($bIsForIdentifier)
     {
diff --git a/src/Rule/Rule.php b/src/Rule/Rule.php
index ae3c595fa..fe7061911 100644
--- a/src/Rule/Rule.php
+++ b/src/Rule/Rule.php
@@ -79,6 +79,8 @@ public function __construct($sRule, $iLineNo = 0, $iColNo = 0)
      *
      * @throws UnexpectedEOFException
      * @throws UnexpectedTokenException
+     *
+     * @internal since V8.8.0
      */
     public static function parse(ParserState $oParserState)
     {
diff --git a/src/RuleSet/DeclarationBlock.php b/src/RuleSet/DeclarationBlock.php
index be22760b4..60d0b0c44 100644
--- a/src/RuleSet/DeclarationBlock.php
+++ b/src/RuleSet/DeclarationBlock.php
@@ -49,6 +49,8 @@ public function __construct($iLineNo = 0)
      *
      * @throws UnexpectedTokenException
      * @throws UnexpectedEOFException
+     *
+     * @internal since V8.8.0
      */
     public static function parse(ParserState $oParserState, $oList = null)
     {
diff --git a/src/RuleSet/RuleSet.php b/src/RuleSet/RuleSet.php
index e90694aed..0cf7ac959 100644
--- a/src/RuleSet/RuleSet.php
+++ b/src/RuleSet/RuleSet.php
@@ -56,6 +56,8 @@ public function __construct($iLineNo = 0)
      *
      * @throws UnexpectedTokenException
      * @throws UnexpectedEOFException
+     *
+     * @internal since V8.8.0
      */
     public static function parseRuleSet(ParserState $oParserState, RuleSet $oRuleSet)
     {
diff --git a/src/Value/CSSFunction.php b/src/Value/CSSFunction.php
index c7024ea5d..de8e558f2 100644
--- a/src/Value/CSSFunction.php
+++ b/src/Value/CSSFunction.php
@@ -47,6 +47,8 @@ public function __construct($sName, $aArguments, $sSeparator = ',', $iLineNo = 0
      * @throws SourceException
      * @throws UnexpectedEOFException
      * @throws UnexpectedTokenException
+     *
+     * @internal since V8.8.0
      */
     public static function parse(ParserState $oParserState, $bIgnoreCase = false)
     {
diff --git a/src/Value/CSSString.php b/src/Value/CSSString.php
index c19b238f5..0251dc7c0 100644
--- a/src/Value/CSSString.php
+++ b/src/Value/CSSString.php
@@ -36,6 +36,8 @@ public function __construct($sString, $iLineNo = 0)
      * @throws SourceException
      * @throws UnexpectedEOFException
      * @throws UnexpectedTokenException
+     *
+     * @internal since V8.8.0
      */
     public static function parse(ParserState $oParserState)
     {
diff --git a/src/Value/CalcFunction.php b/src/Value/CalcFunction.php
index a3db27101..70f2f4582 100644
--- a/src/Value/CalcFunction.php
+++ b/src/Value/CalcFunction.php
@@ -30,6 +30,8 @@ class CalcFunction extends CSSFunction
      *
      * @throws UnexpectedTokenException
      * @throws UnexpectedEOFException
+     *
+     * @internal since V8.8.0
      */
     public static function parse(ParserState $oParserState, $bIgnoreCase = false)
     {
diff --git a/src/Value/Color.php b/src/Value/Color.php
index a002760b3..fbbf11a1d 100644
--- a/src/Value/Color.php
+++ b/src/Value/Color.php
@@ -30,6 +30,8 @@ public function __construct(array $aColor, $iLineNo = 0)
      *
      * @throws UnexpectedEOFException
      * @throws UnexpectedTokenException
+     *
+     * @internal since V8.8.0
      */
     public static function parse(ParserState $oParserState, $bIgnoreCase = false)
     {
diff --git a/src/Value/LineName.php b/src/Value/LineName.php
index 588cb4cbe..5b59fce58 100644
--- a/src/Value/LineName.php
+++ b/src/Value/LineName.php
@@ -23,6 +23,8 @@ public function __construct(array $aComponents = [], $iLineNo = 0)
      *
      * @throws UnexpectedTokenException
      * @throws UnexpectedEOFException
+     *
+     * @internal since V8.8.0
      */
     public static function parse(ParserState $oParserState)
     {
diff --git a/src/Value/Size.php b/src/Value/Size.php
index 8907526a5..2e45d2721 100644
--- a/src/Value/Size.php
+++ b/src/Value/Size.php
@@ -92,6 +92,8 @@ public function __construct($fSize, $sUnit = null, $bIsColorComponent = false, $
      *
      * @throws UnexpectedEOFException
      * @throws UnexpectedTokenException
+     *
+     * @internal since V8.8.0
      */
     public static function parse(ParserState $oParserState, $bIsColorComponent = false)
     {
diff --git a/src/Value/URL.php b/src/Value/URL.php
index 92da97262..7d5bd8e83 100644
--- a/src/Value/URL.php
+++ b/src/Value/URL.php
@@ -33,6 +33,8 @@ public function __construct(CSSString $oURL, $iLineNo = 0)
      * @throws SourceException
      * @throws UnexpectedEOFException
      * @throws UnexpectedTokenException
+     *
+     * @internal since V8.8.0
      */
     public static function parse(ParserState $oParserState)
     {
diff --git a/src/Value/Value.php b/src/Value/Value.php
index 6232d126e..3816289df 100644
--- a/src/Value/Value.php
+++ b/src/Value/Value.php
@@ -36,6 +36,8 @@ public function __construct($iLineNo = 0)
      *
      * @throws UnexpectedTokenException
      * @throws UnexpectedEOFException
+     *
+     * @internal since V8.8.0
      */
     public static function parseValue(ParserState $oParserState, array $aListDelimiters = [])
     {
@@ -112,6 +114,8 @@ public static function parseValue(ParserState $oParserState, array $aListDelimit
      *
      * @throws UnexpectedEOFException
      * @throws UnexpectedTokenException
+     *
+     * @internal since V8.8.0
      */
     public static function parseIdentifierOrFunction(ParserState $oParserState, $bIgnoreCase = false)
     {
@@ -142,6 +146,8 @@ public static function parseIdentifierOrFunction(ParserState $oParserState, $bIg
      * @throws UnexpectedEOFException
      * @throws UnexpectedTokenException
      * @throws SourceException
+     *
+     * @internal since V8.8.0
      */
     public static function parsePrimitiveValue(ParserState $oParserState)
     {