diff --git a/src/Standards/PSR12/Tests/Classes/AnonClassDeclarationUnitTest.inc b/src/Standards/PSR12/Tests/Classes/AnonClassDeclarationUnitTest.inc
index fe3ee02ef8..386b12c226 100644
--- a/src/Standards/PSR12/Tests/Classes/AnonClassDeclarationUnitTest.inc
+++ b/src/Standards/PSR12/Tests/Classes/AnonClassDeclarationUnitTest.inc
@@ -88,3 +88,9 @@ $instance = new class() extends SomeClass implements
     SomeInterface{
     public function __construct() {}
 };
+
+// PHP 8.3 readonly anonymous classes.
+$anon = new readonly class {};
+$anon = new readonly    class {};
+$anon = new readonly
+        class {};
diff --git a/src/Standards/PSR12/Tests/Classes/AnonClassDeclarationUnitTest.inc.fixed b/src/Standards/PSR12/Tests/Classes/AnonClassDeclarationUnitTest.inc.fixed
index 4a6c5a1f1a..28b38f7086 100644
--- a/src/Standards/PSR12/Tests/Classes/AnonClassDeclarationUnitTest.inc.fixed
+++ b/src/Standards/PSR12/Tests/Classes/AnonClassDeclarationUnitTest.inc.fixed
@@ -91,3 +91,8 @@ $instance = new class () extends SomeClass implements
 {
     public function __construct() {}
 };
+
+// PHP 8.3 readonly anonymous classes.
+$anon = new readonly class {};
+$anon = new readonly class {};
+$anon = new readonly class {};
diff --git a/src/Standards/PSR12/Tests/Classes/AnonClassDeclarationUnitTest.php b/src/Standards/PSR12/Tests/Classes/AnonClassDeclarationUnitTest.php
index 06104444ae..240352704f 100644
--- a/src/Standards/PSR12/Tests/Classes/AnonClassDeclarationUnitTest.php
+++ b/src/Standards/PSR12/Tests/Classes/AnonClassDeclarationUnitTest.php
@@ -55,6 +55,8 @@ public function getErrorList()
             75 => 1,
             87 => 1,
             88 => 1,
+            94 => 1,
+            96 => 1,
         ];
 
     }//end getErrorList()
diff --git a/src/Standards/Squiz/Tests/Classes/LowercaseClassKeywordsUnitTest.inc b/src/Standards/Squiz/Tests/Classes/LowercaseClassKeywordsUnitTest.inc
index eb724505eb..da47fa179e 100644
--- a/src/Standards/Squiz/Tests/Classes/LowercaseClassKeywordsUnitTest.inc
+++ b/src/Standards/Squiz/Tests/Classes/LowercaseClassKeywordsUnitTest.inc
@@ -12,3 +12,5 @@ ReadOnly class MyClass
 }
 
 $a = new CLASS() {};
+
+$anon = new ReadOnly class() {};
diff --git a/src/Standards/Squiz/Tests/Classes/LowercaseClassKeywordsUnitTest.inc.fixed b/src/Standards/Squiz/Tests/Classes/LowercaseClassKeywordsUnitTest.inc.fixed
index 672fdfb3c4..0c18bc86b7 100644
--- a/src/Standards/Squiz/Tests/Classes/LowercaseClassKeywordsUnitTest.inc.fixed
+++ b/src/Standards/Squiz/Tests/Classes/LowercaseClassKeywordsUnitTest.inc.fixed
@@ -12,3 +12,5 @@ readonly class MyClass
 }
 
 $a = new class() {};
+
+$anon = new readonly class() {};
diff --git a/src/Standards/Squiz/Tests/Classes/LowercaseClassKeywordsUnitTest.php b/src/Standards/Squiz/Tests/Classes/LowercaseClassKeywordsUnitTest.php
index 9bbc66fb1d..7fc45e786b 100644
--- a/src/Standards/Squiz/Tests/Classes/LowercaseClassKeywordsUnitTest.php
+++ b/src/Standards/Squiz/Tests/Classes/LowercaseClassKeywordsUnitTest.php
@@ -40,6 +40,7 @@ public function getErrorList()
             10 => 1,
             11 => 1,
             14 => 1,
+            16 => 1,
         ];
 
         return $errors;
diff --git a/src/Standards/Squiz/Tests/WhiteSpace/ScopeKeywordSpacingUnitTest.1.inc b/src/Standards/Squiz/Tests/WhiteSpace/ScopeKeywordSpacingUnitTest.1.inc
index a76f42fef4..49eaa2b633 100644
--- a/src/Standards/Squiz/Tests/WhiteSpace/ScopeKeywordSpacingUnitTest.1.inc
+++ b/src/Standards/Squiz/Tests/WhiteSpace/ScopeKeywordSpacingUnitTest.1.inc
@@ -139,3 +139,11 @@ class ReadonlyTest {
 
     public function __construct(readonly  protected  float|int $x, public readonly?string &$y = 'test') {}
 }
+
+// PHP 8.2 readonly classes.
+readonly class ReadonlyClassTest {}
+readonly    class ReadonlyClassTest {}
+
+// PHP 8.3 readonly anonymous classes.
+$anon = new readonly class {};
+$anon = new readonly    class {};
diff --git a/src/Standards/Squiz/Tests/WhiteSpace/ScopeKeywordSpacingUnitTest.1.inc.fixed b/src/Standards/Squiz/Tests/WhiteSpace/ScopeKeywordSpacingUnitTest.1.inc.fixed
index 7fd80626d5..4c116c76ad 100644
--- a/src/Standards/Squiz/Tests/WhiteSpace/ScopeKeywordSpacingUnitTest.1.inc.fixed
+++ b/src/Standards/Squiz/Tests/WhiteSpace/ScopeKeywordSpacingUnitTest.1.inc.fixed
@@ -133,3 +133,11 @@ class ReadonlyTest {
 
     public function __construct(readonly protected float|int $x, public readonly ?string &$y = 'test') {}
 }
+
+// PHP 8.2 readonly classes.
+readonly class ReadonlyClassTest {}
+readonly class ReadonlyClassTest {}
+
+// PHP 8.3 readonly anonymous classes.
+$anon = new readonly class {};
+$anon = new readonly class {};
diff --git a/src/Standards/Squiz/Tests/WhiteSpace/ScopeKeywordSpacingUnitTest.php b/src/Standards/Squiz/Tests/WhiteSpace/ScopeKeywordSpacingUnitTest.php
index 52bd129ace..cc58d4e797 100644
--- a/src/Standards/Squiz/Tests/WhiteSpace/ScopeKeywordSpacingUnitTest.php
+++ b/src/Standards/Squiz/Tests/WhiteSpace/ScopeKeywordSpacingUnitTest.php
@@ -56,6 +56,8 @@ public function getErrorList($testFile='')
                 134 => 2,
                 138 => 2,
                 140 => 3,
+                145 => 1,
+                149 => 1,
             ];
 
         case 'ScopeKeywordSpacingUnitTest.3.inc':