diff --git a/README.md b/README.md
index d3fbf154..09071d29 100644
--- a/README.md
+++ b/README.md
@@ -1,7 +1,4 @@
-# This repo has been archived
-
-
-#### Please go to https://github.com/scssphp/scssphp
+# SCSS compiler written in PHP . Abandoned version. For legacy, internal purposes only. Needed for maintaining PHP 8.x support.
 
 ----
 
diff --git a/src/Node/Number.php b/src/Node/Number.php
index 42c16803..7e26ffc6 100644
--- a/src/Node/Number.php
+++ b/src/Node/Number.php
@@ -138,6 +138,7 @@ public function normalize()
     /**
      * {@inheritdoc}
      */
+    #[\ReturnTypeWillChange]
     public function offsetExists($offset)
     {
         if ($offset === -3) {
@@ -162,6 +163,7 @@ public function offsetExists($offset)
     /**
      * {@inheritdoc}
      */
+    #[\ReturnTypeWillChange]
     public function offsetGet($offset)
     {
         switch ($offset) {
@@ -188,6 +190,7 @@ public function offsetGet($offset)
     /**
      * {@inheritdoc}
      */
+    #[\ReturnTypeWillChange]
     public function offsetSet($offset, $value)
     {
         if ($offset === 1) {
@@ -206,6 +209,7 @@ public function offsetSet($offset, $value)
     /**
      * {@inheritdoc}
      */
+    #[\ReturnTypeWillChange]
     public function offsetUnset($offset)
     {
         if ($offset === 1) {
@@ -226,6 +230,7 @@ public function offsetUnset($offset)
      *
      * @return boolean
      */
+    #[\ReturnTypeWillChange]
     public function unitless()
     {
         return ! array_sum($this->units);
@@ -236,6 +241,7 @@ public function unitless()
      *
      * @return string
      */
+    #[\ReturnTypeWillChange]
     public function unitStr()
     {
         $numerators   = [];
@@ -263,6 +269,7 @@ public function unitStr()
      *
      * @return string
      */
+    #[\ReturnTypeWillChange]
     public function output(Compiler $compiler = null)
     {
         $dimension = round($this->dimension, static::$precision);
@@ -299,6 +306,7 @@ public function output(Compiler $compiler = null)
     /**
      * {@inheritdoc}
      */
+    #[\ReturnTypeWillChange]
     public function __toString()
     {
         return $this->output();
diff --git a/src/Parser.php b/src/Parser.php
index c05e4ee8..51cb7de7 100644
--- a/src/Parser.php
+++ b/src/Parser.php
@@ -833,7 +833,7 @@ protected function peek($regex, &$out, $from = null)
         }
 
         $r = '/' . $regex . '/' . $this->patternModifiers;
-        $result = preg_match($r, $this->buffer, $out, null, $from);
+        $result = preg_match($r, $this->buffer, $out, 0, $from);
 
         return $result;
     }
@@ -902,7 +902,7 @@ protected function match($regex, &$out, $eatWhitespace = null)
     {
         $r = '/' . $regex . '/' . $this->patternModifiers;
 
-        if (! preg_match($r, $this->buffer, $out, null, $this->count)) {
+        if (! preg_match($r, $this->buffer, $out, 0, $this->count)) {
             return false;
         }
 
@@ -983,7 +983,7 @@ protected function whitespace()
     {
         $gotWhite = false;
 
-        while (preg_match(static::$whitePattern, $this->buffer, $m, null, $this->count)) {
+        while (preg_match(static::$whitePattern, $this->buffer, $m, 0, $this->count)) {
             if (isset($m[1]) && empty($this->commentsSeen[$this->count])) {
                 // comment that are kept in the output CSS
                 $comment = [];
@@ -2219,7 +2219,7 @@ protected function propertyName(&$out)
             static::$whitePattern,
             $this->buffer,
             $m,
-            null,
+            0,
             $this->count
         )) {
             if (! empty($m[0])) {