diff --git a/NEWS b/NEWS
index 733481639c0..29dd679a21d 100644
--- a/NEWS
+++ b/NEWS
@@ -54,6 +54,9 @@ PHP                                                                        NEWS
   . bind_textdomain_codeset now throws an exception on empty domain.
     (David Carlier)
 
+- Hash:
+  . Changed return type of hash_update() to true. (nielsdos)
+
 - IMAP:
   . Moved to PECL. (Derick Rethans)
 
diff --git a/UPGRADING b/UPGRADING
index 301dd3d0887..23c18bb8b3b 100644
--- a/UPGRADING
+++ b/UPGRADING
@@ -325,6 +325,10 @@ PHP 8.4 UPGRADE NOTES
 - Gettext:
   . bind_textdomain_codeset now throws an exception if the domain's argument is empty.
 
+- Hash:
+  . Changed the return type of hash_update() to true. It was already the case that only
+    true could be returned, but the stub was not updated yet.
+
 - 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/hash/hash.stub.php b/ext/hash/hash.stub.php
index e6368e48719..6c45c63c462 100644
--- a/ext/hash/hash.stub.php
+++ b/ext/hash/hash.stub.php
@@ -29,7 +29,7 @@ function hash_hmac_file(string $algo, string $filename, #[\SensitiveParameter] s
  */
 function hash_init(string $algo, int $flags = 0, #[\SensitiveParameter] string $key = "", array $options = []): HashContext {}
 
-function hash_update(HashContext $context, string $data): bool {}
+function hash_update(HashContext $context, string $data): true {}
 
 /** @param resource $stream */
 function hash_update_stream(HashContext $context, $stream, int $length = -1): int {}
diff --git a/ext/hash/hash_arginfo.h b/ext/hash/hash_arginfo.h
index 8c24a4009d6..cc0050dff97 100644
--- a/ext/hash/hash_arginfo.h
+++ b/ext/hash/hash_arginfo.h
@@ -1,5 +1,5 @@
 /* This is a generated file, edit the .stub.php file instead.
- * Stub hash: f4531ebc6817042a2729c3dd1502631656c29f05 */
+ * Stub hash: 9c0f01839a287d394b78b0dfd37b278a59d1b366 */
 
 ZEND_BEGIN_ARG_WITH_RETURN_TYPE_INFO_EX(arginfo_hash, 0, 2, IS_STRING, 0)
 	ZEND_ARG_TYPE_INFO(0, algo, IS_STRING, 0)
@@ -36,7 +36,7 @@ ZEND_BEGIN_ARG_WITH_RETURN_OBJ_INFO_EX(arginfo_hash_init, 0, 1, HashContext, 0)
 	ZEND_ARG_TYPE_INFO_WITH_DEFAULT_VALUE(0, options, IS_ARRAY, 0, "[]")
 ZEND_END_ARG_INFO()
 
-ZEND_BEGIN_ARG_WITH_RETURN_TYPE_INFO_EX(arginfo_hash_update, 0, 2, _IS_BOOL, 0)
+ZEND_BEGIN_ARG_WITH_RETURN_TYPE_INFO_EX(arginfo_hash_update, 0, 2, IS_TRUE, 0)
 	ZEND_ARG_OBJ_INFO(0, context, HashContext, 0)
 	ZEND_ARG_TYPE_INFO(0, data, IS_STRING, 0)
 ZEND_END_ARG_INFO()