diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index a4cfe9ea..268c9e4b 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -4,21 +4,21 @@ on:
   push:
     branches:
       - master
-      - '5.0'
+      - '5.x'
   pull_request:
     branches:
       - '*'
 
 jobs:
   testsuite:
-    runs-on: ubuntu-18.04
+    runs-on: ubuntu-20.04
     strategy:
       fail-fast: false
       matrix:
-        php-version: ['7.2', '7.4', '8.0']
+        php-version: ['7.4', '8.0']
         prefer-lowest: ['']
         include:
-          - php-version: '7.2'
+          - php-version: '7.4'
             prefer-lowest: 'prefer-lowest'
 
     steps:
@@ -78,7 +78,7 @@ jobs:
     - name: Setup PHP
       uses: shivammathur/setup-php@v2
       with:
-        php-version: '7.2'
+        php-version: '7.4'
         extensions: mbstring, intl
         tools: cs2pr
         coverage: none
diff --git a/CakePHP/Sniffs/Commenting/FunctionCommentSniff.php b/CakePHP/Sniffs/Commenting/FunctionCommentSniff.php
index ab2c63dd..5a139e9b 100644
--- a/CakePHP/Sniffs/Commenting/FunctionCommentSniff.php
+++ b/CakePHP/Sniffs/Commenting/FunctionCommentSniff.php
@@ -42,6 +42,7 @@ class FunctionCommentSniff implements Sniff
      * Returns an array of tokens this test wants to listen for.
      *
      * @return array
+     * @phpcsSuppress SlevomatCodingStandard.TypeHints.ReturnTypeHint.MissingNativeTypeHint
      */
     public function register()
     {
@@ -49,11 +50,7 @@ public function register()
     }
 
     /**
-     * Processes this test, when one of its tokens is encountered.
-     *
-     * @param \PHP_CodeSniffer\Files\File $phpcsFile The file being scanned.
-     * @param int $stackPtr The position of the current token in the stack passed in $tokens.
-     * @return void
+     * @inheritDoc
      */
     public function process(File $phpcsFile, $stackPtr)
     {
@@ -115,7 +112,7 @@ public function process(File $phpcsFile, $stackPtr)
      * @param int $stackPtr The position of the current token in the stack passed in $tokens.
      * @return void
      */
-    protected function processTagSpacing(File $phpcsFile, int $stackPtr, int $commentStart)
+    protected function processTagSpacing(File $phpcsFile, int $stackPtr, int $commentStart): void
     {
         $tokens = $phpcsFile->getTokens();
         $tags = $tokens[$commentStart]['comment_tags'];
@@ -142,7 +139,7 @@ protected function processTagSpacing(File $phpcsFile, int $stackPtr, int $commen
      * @param int $commentStart The position in the stack where the comment started.
      * @return void
      */
-    protected function processThrows(File $phpcsFile, int $stackPtr, int $commentStart)
+    protected function processThrows(File $phpcsFile, int $stackPtr, int $commentStart): void
     {
         $tokens = $phpcsFile->getTokens();
 
diff --git a/CakePHP/Sniffs/Commenting/TypeHintSniff.php b/CakePHP/Sniffs/Commenting/TypeHintSniff.php
index 9a7d5b4d..726d2fcf 100644
--- a/CakePHP/Sniffs/Commenting/TypeHintSniff.php
+++ b/CakePHP/Sniffs/Commenting/TypeHintSniff.php
@@ -41,12 +41,12 @@ class TypeHintSniff implements Sniff
     /**
      * @var bool
      */
-    public $convertArraysToGenerics = true;
+    public bool $convertArraysToGenerics = true;
 
     /**
      * @var array<string>
      */
-    protected static $typeHintTags = [
+    protected static array $typeHintTags = [
         '@var',
         '@psalm-var',
         '@phpstan-var',
@@ -62,6 +62,7 @@ class TypeHintSniff implements Sniff
      * Returns an array of tokens this test wants to listen for.
      *
      * @return array
+     * @phpcsSuppress SlevomatCodingStandard.TypeHints.ReturnTypeHint.MissingNativeTypeHint
      */
     public function register()
     {
@@ -69,11 +70,7 @@ public function register()
     }
 
     /**
-     * Processes this test, when one of its tokens is encountered.
-     *
-     * @param \PHP_CodeSniffer\Files\File $phpcsFile The file being scanned.
-     * @param int $stackPtr The position of the current token in the stack passed in $tokens.
-     * @return void
+     * @inheritDoc
      */
     public function process(File $phpcsFile, $stackPtr)
     {
@@ -233,7 +230,7 @@ protected function getSortedTypeHint(array $types): string
         }
 
         $sorted = [];
-        array_walk($sortable, function ($types) use (&$sorted) {
+        array_walk($sortable, function ($types) use (&$sorted): void {
             $sorted = array_merge($sorted, $types);
         });
 
@@ -258,7 +255,7 @@ protected function renderUnionTypes(array $typeNodes): string
      * @param string $tagComment tag comment
      * @return \PHPStan\PhpDocParser\Ast\PhpDoc\PhpDocTagValueNode
      */
-    protected static function getValueNode(string $tagName, $tagComment): PhpDocTagValueNode
+    protected static function getValueNode(string $tagName, string $tagComment): PhpDocTagValueNode
     {
         static $phpDocParser;
         if (!$phpDocParser) {
diff --git a/CakePHP/Sniffs/Formatting/BlankLineBeforeReturnSniff.php b/CakePHP/Sniffs/Formatting/BlankLineBeforeReturnSniff.php
index 1eb9faed..b75fedf5 100644
--- a/CakePHP/Sniffs/Formatting/BlankLineBeforeReturnSniff.php
+++ b/CakePHP/Sniffs/Formatting/BlankLineBeforeReturnSniff.php
@@ -27,16 +27,6 @@
  */
 class BlankLineBeforeReturnSniff implements Sniff
 {
-    /**
-     * A list of tokenizers this sniff supports.
-     *
-     * @var array
-     */
-    public $supportedTokenizers = [
-        'PHP',
-        'JS',
-    ];
-
     /**
      * @inheritDoc
      */
diff --git a/CakePHP/Sniffs/NamingConventions/ValidFunctionNameSniff.php b/CakePHP/Sniffs/NamingConventions/ValidFunctionNameSniff.php
index 7212f25d..f8daa2ad 100644
--- a/CakePHP/Sniffs/NamingConventions/ValidFunctionNameSniff.php
+++ b/CakePHP/Sniffs/NamingConventions/ValidFunctionNameSniff.php
@@ -29,7 +29,7 @@ class ValidFunctionNameSniff extends AbstractScopeSniff
      *
      * @var array
      */
-    protected $_magicMethods = [
+    protected array $_magicMethods = [
         'construct',
         'destruct',
         'call',
diff --git a/CakePHP/Sniffs/PHP/DisallowShortOpenTagSniff.php b/CakePHP/Sniffs/PHP/DisallowShortOpenTagSniff.php
index f1fbab20..a67aa0ce 100644
--- a/CakePHP/Sniffs/PHP/DisallowShortOpenTagSniff.php
+++ b/CakePHP/Sniffs/PHP/DisallowShortOpenTagSniff.php
@@ -32,6 +32,7 @@ class DisallowShortOpenTagSniff implements Sniff
      * So include T_INLINE_HTML which is what "<?" is detected as
      *
      * @return array
+     * @phpcsSuppress SlevomatCodingStandard.TypeHints.ReturnTypeHint.MissingNativeTypeHint
      */
     public function register()
     {
diff --git a/CakePHP/Sniffs/WhiteSpace/FunctionSpacingSniff.php b/CakePHP/Sniffs/WhiteSpace/FunctionSpacingSniff.php
index f5b50085..c488f28f 100644
--- a/CakePHP/Sniffs/WhiteSpace/FunctionSpacingSniff.php
+++ b/CakePHP/Sniffs/WhiteSpace/FunctionSpacingSniff.php
@@ -100,7 +100,7 @@ public function process(File $phpCsFile, $stackPointer)
      * @param int|null $nextContentIndex Index
      * @return void
      */
-    protected function assertNewLineAtTheEnd(File $phpCsFile, $closingBraceIndex, $nextContentIndex)
+    protected function assertNewLineAtTheEnd(File $phpCsFile, int $closingBraceIndex, ?int $nextContentIndex): void
     {
         $tokens = $phpCsFile->getTokens();
 
@@ -123,7 +123,7 @@ protected function assertNewLineAtTheEnd(File $phpCsFile, $closingBraceIndex, $n
      * @param int $stackPointer Stack pointer
      * @return void
      */
-    protected function assertNewLineAtTheBeginning(File $phpCsFile, $stackPointer)
+    protected function assertNewLineAtTheBeginning(File $phpCsFile, int $stackPointer): void
     {
         $tokens = $phpCsFile->getTokens();
 
diff --git a/CakePHP/Sniffs/WhiteSpace/TabAndSpaceSniff.php b/CakePHP/Sniffs/WhiteSpace/TabAndSpaceSniff.php
index 6d977d58..7873e5d8 100644
--- a/CakePHP/Sniffs/WhiteSpace/TabAndSpaceSniff.php
+++ b/CakePHP/Sniffs/WhiteSpace/TabAndSpaceSniff.php
@@ -24,17 +24,6 @@
 
 class TabAndSpaceSniff implements Sniff
 {
-    /**
-     * A list of tokenizers this sniff supports.
-     *
-     * @var array
-     */
-    public $supportedTokenizers = [
-        'PHP',
-        'JS',
-        'CSS',
-    ];
-
     /**
      * @inheritDoc
      */
diff --git a/CakePHP/ruleset.xml b/CakePHP/ruleset.xml
index 651922e0..895fdac1 100644
--- a/CakePHP/ruleset.xml
+++ b/CakePHP/ruleset.xml
@@ -177,7 +177,6 @@
             <property name="enableMixedTypeHint" type="boolean" value="true"/>
             <property name="enableUnionTypeHint" type="boolean" value="true"/>
         </properties>
-        <exclude name="SlevomatCodingStandard.TypeHints.ParameterTypeHint.MissingNativeTypeHint"/>
         <exclude name="SlevomatCodingStandard.TypeHints.ParameterTypeHint.MissingTraversableTypeHintSpecification"/>
         <exclude name="SlevomatCodingStandard.TypeHints.ParameterTypeHint.UselessAnnotation"/>
         <exclude-pattern>*/tests/*</exclude-pattern>
@@ -189,7 +188,6 @@
             <property name="enableStaticTypeHint" type="boolean" value="true"/>
             <property name="enableUnionTypeHint" type="boolean" value="true"/>
         </properties>
-        <exclude name="SlevomatCodingStandard.TypeHints.ReturnTypeHint.MissingNativeTypeHint"/>
         <exclude name="SlevomatCodingStandard.TypeHints.ReturnTypeHint.MissingTraversableTypeHintSpecification"/>
         <exclude name="SlevomatCodingStandard.TypeHints.ReturnTypeHint.UselessAnnotation"/>
         <exclude-pattern>*/tests/*</exclude-pattern>
@@ -200,7 +198,6 @@
             <property name="enableStaticTypeHint" type="boolean" value="true"/>
             <property name="enableUnionTypeHint" type="boolean" value="true"/>
         </properties>
-        <exclude name="SlevomatCodingStandard.TypeHints.PropertyTypeHint.MissingNativeTypeHint"/>
         <exclude name="SlevomatCodingStandard.TypeHints.PropertyTypeHint.MissingTraversableTypeHintSpecification"/>
         <exclude name="SlevomatCodingStandard.TypeHints.PropertyTypeHint.UselessAnnotation"/>
         <exclude-pattern>*/tests/*</exclude-pattern>