diff --git a/UPGRADING b/UPGRADING
index d7c640c3e2b..7d8d00b7647 100644
--- a/UPGRADING
+++ b/UPGRADING
@@ -205,6 +205,10 @@ PHP 8.4 UPGRADE NOTES
 5. Changed Functions
 ========================================
 
+- DOM:
+  . DOMDocument::registerNodeClass() now has a tentative return type of true.
+    Previously, the return type was bool but only true could be returned in practice.
+
 - Intl:
   . IntlDateFormatter::__construct() throws a ValueError if the locale is invalid.
   . NumberFormatter::__construct() throws a ValueError if the locale is invalid.
diff --git a/ext/dom/php_dom.stub.php b/ext/dom/php_dom.stub.php
index dd52d5ca510..db86fe249b8 100644
--- a/ext/dom/php_dom.stub.php
+++ b/ext/dom/php_dom.stub.php
@@ -1098,7 +1098,7 @@ namespace DOM
         public function normalizeDocument(): void {}
 
         /** @tentative-return-type */
-        public function registerNodeClass(string $baseClass, ?string $extendedClass): bool {}
+        public function registerNodeClass(string $baseClass, ?string $extendedClass): true {}
 
 #ifdef LIBXML_SCHEMAS_ENABLED
         /** @tentative-return-type */
diff --git a/ext/dom/php_dom_arginfo.h b/ext/dom/php_dom_arginfo.h
index 43de4fee965..3a2ec9eddc0 100644
--- a/ext/dom/php_dom_arginfo.h
+++ b/ext/dom/php_dom_arginfo.h
@@ -1,5 +1,5 @@
 /* This is a generated file, edit the .stub.php file instead.
- * Stub hash: dc65484181a06009b064b650edbb9d831a56fd7c */
+ * Stub hash: 5512165ddaad08287561abac2a325e2aab3c6188 */
 
 ZEND_BEGIN_ARG_WITH_RETURN_OBJ_INFO_EX(arginfo_dom_import_simplexml, 0, 1, DOMElement, 0)
 	ZEND_ARG_TYPE_INFO(0, node, IS_OBJECT, 0)
@@ -509,7 +509,7 @@ ZEND_END_ARG_INFO()
 
 #define arginfo_class_DOM_Document_normalizeDocument arginfo_class_DOMNode_normalize
 
-ZEND_BEGIN_ARG_WITH_TENTATIVE_RETURN_TYPE_INFO_EX(arginfo_class_DOM_Document_registerNodeClass, 0, 2, _IS_BOOL, 0)
+ZEND_BEGIN_ARG_WITH_TENTATIVE_RETURN_TYPE_INFO_EX(arginfo_class_DOM_Document_registerNodeClass, 0, 2, IS_TRUE, 0)
 	ZEND_ARG_TYPE_INFO(0, baseClass, IS_STRING, 0)
 	ZEND_ARG_TYPE_INFO(0, extendedClass, IS_STRING, 1)
 ZEND_END_ARG_INFO()