diff --git a/NEWS b/NEWS
index 393aab037a216..ba76d468a8b0e 100644
--- a/NEWS
+++ b/NEWS
@@ -38,6 +38,11 @@ PHP                                                                        NEWS
   . INI settings session.sid_length and session.sid_bits_per_character are now
     deprecated. (timwolla)
 
+- SPL:
+  . The SplFixedArray::__wakeup() method has been deprecated as it implements
+    __serialize() and __unserialize() which need to be overwritten instead.
+    (TysonAndre)
+
 - Standard:
   . Unserializing the uppercase 'S' tag is now deprecated. (timwolla)
 
diff --git a/UPGRADING b/UPGRADING
index 51705677354f6..46cfbcdc4ffe4 100644
--- a/UPGRADING
+++ b/UPGRADING
@@ -463,6 +463,10 @@ PHP 8.4 UPGRADE NOTES
     hexadecimal session IDs and stop changing these two INI settings.
     RFC: https://wiki.php.net/rfc/deprecations_php_8_4
 
+- SPL:
+  . The SplFixedArray::__wakeup() method has been deprecated as it implements
+    __serialize() and __unserialize() which need to be overwritten instead.
+
 - Standard:
   . Calling stream_context_set_option() with 2 arguments is deprecated.
     Use stream_context_set_options() instead.
diff --git a/ext/spl/spl_fixedarray.c b/ext/spl/spl_fixedarray.c
index 368b5e5d10dce..96a09309f305e 100644
--- a/ext/spl/spl_fixedarray.c
+++ b/ext/spl/spl_fixedarray.c
@@ -22,6 +22,7 @@
 #include "php.h"
 #include "zend_interfaces.h"
 #include "zend_exceptions.h"
+#include "zend_attributes.h"
 
 #include "spl_fixedarray_arginfo.h"
 #include "spl_fixedarray.h"
diff --git a/ext/spl/spl_fixedarray.stub.php b/ext/spl/spl_fixedarray.stub.php
index 8ca6497be085c..a5a239ab4d69c 100644
--- a/ext/spl/spl_fixedarray.stub.php
+++ b/ext/spl/spl_fixedarray.stub.php
@@ -6,10 +6,8 @@ class SplFixedArray implements IteratorAggregate, ArrayAccess, Countable, JsonSe
 {
     public function __construct(int $size = 0) {}
 
-    /**
-     * @tentative-return-type
-     * @deprecated
-     */
+    /** @tentative-return-type */
+    #[\Deprecated(since: '8.4', message: 'this method is obsolete, as serialization hooks are provided by __unserialize() and __serialize()')]
     public function __wakeup(): void {}
 
     public function __serialize(): array {}
diff --git a/ext/spl/spl_fixedarray_arginfo.h b/ext/spl/spl_fixedarray_arginfo.h
index aa92494a8f7d9..f71ec74adf205 100644
--- a/ext/spl/spl_fixedarray_arginfo.h
+++ b/ext/spl/spl_fixedarray_arginfo.h
@@ -1,5 +1,5 @@
 /* This is a generated file, edit the .stub.php file instead.
- * Stub hash: 453f55b59c0b61f2c8a41b17694be74c3e0a6171 */
+ * Stub hash: a251ed19168eddf1d45a74d25104e92585669f5e */
 
 ZEND_BEGIN_ARG_INFO_EX(arginfo_class_SplFixedArray___construct, 0, 0, 0)
 	ZEND_ARG_TYPE_INFO_WITH_DEFAULT_VALUE(0, size, IS_LONG, 0, "0")
@@ -97,5 +97,18 @@ static zend_class_entry *register_class_SplFixedArray(zend_class_entry *class_en
 	class_entry = zend_register_internal_class_ex(&ce, NULL);
 	zend_class_implements(class_entry, 4, class_entry_IteratorAggregate, class_entry_ArrayAccess, class_entry_Countable, class_entry_JsonSerializable);
 
+
+	zend_attribute *attribute_Deprecated_func___wakeup_0 = zend_add_function_attribute(zend_hash_str_find_ptr(&class_entry->function_table, "__wakeup", sizeof("__wakeup") - 1), ZSTR_KNOWN(ZEND_STR_DEPRECATED), 2);
+	zval attribute_Deprecated_func___wakeup_0_arg0;
+	zend_string *attribute_Deprecated_func___wakeup_0_arg0_str = zend_string_init("8.4", strlen("8.4"), 1);
+	ZVAL_STR(&attribute_Deprecated_func___wakeup_0_arg0, attribute_Deprecated_func___wakeup_0_arg0_str);
+	ZVAL_COPY_VALUE(&attribute_Deprecated_func___wakeup_0->args[0].value, &attribute_Deprecated_func___wakeup_0_arg0);
+	attribute_Deprecated_func___wakeup_0->args[0].name = ZSTR_KNOWN(ZEND_STR_SINCE);
+	zval attribute_Deprecated_func___wakeup_0_arg1;
+	zend_string *attribute_Deprecated_func___wakeup_0_arg1_str = zend_string_init("the __unserialize() method must be overloaded instead", strlen("the __unserialize() method must be overloaded instead"), 1);
+	ZVAL_STR(&attribute_Deprecated_func___wakeup_0_arg1, attribute_Deprecated_func___wakeup_0_arg1_str);
+	ZVAL_COPY_VALUE(&attribute_Deprecated_func___wakeup_0->args[1].value, &attribute_Deprecated_func___wakeup_0_arg1);
+	attribute_Deprecated_func___wakeup_0->args[1].name = ZSTR_KNOWN(ZEND_STR_MESSAGE);
+
 	return class_entry;
 }