diff --git a/composer.json b/composer.json
index d033daaf21..cb9caba6f1 100644
--- a/composer.json
+++ b/composer.json
@@ -25,7 +25,7 @@
 		"nikic/php-parser": "^4.17.1",
 		"ondram/ci-detector": "^3.4.0",
 		"ondrejmirtes/better-reflection": "6.25.0.17",
-		"phpstan/php-8-stubs": "0.3.98",
+		"phpstan/php-8-stubs": "0.3.99",
 		"phpstan/phpdoc-parser": "1.29.1",
 		"psr/http-message": "^1.1",
 		"react/async": "^3",
diff --git a/composer.lock b/composer.lock
index 46635833ba..fc9f3d1ef0 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,7 +4,7 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "5658482bd1bfa5d86d2ae312865bfd24",
+    "content-hash": "90a2d079aaedb41e51a4f7b16bacbb85",
     "packages": [
         {
             "name": "clue/ndjson-react",
@@ -2248,16 +2248,16 @@
         },
         {
             "name": "phpstan/php-8-stubs",
-            "version": "0.3.98",
+            "version": "0.3.99",
             "source": {
                 "type": "git",
                 "url": "https://github.com/phpstan/php-8-stubs.git",
-                "reference": "5a2c1686edf1908e536dbd6d4789aad26794431c"
+                "reference": "9bd59d79824c80d7613c8acc70542c42a8cac7f7"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/phpstan/php-8-stubs/zipball/5a2c1686edf1908e536dbd6d4789aad26794431c",
-                "reference": "5a2c1686edf1908e536dbd6d4789aad26794431c",
+                "url": "https://api.github.com/repos/phpstan/php-8-stubs/zipball/9bd59d79824c80d7613c8acc70542c42a8cac7f7",
+                "reference": "9bd59d79824c80d7613c8acc70542c42a8cac7f7",
                 "shasum": ""
             },
             "type": "library",
@@ -2274,9 +2274,9 @@
             "description": "PHP stubs extracted from php-src",
             "support": {
                 "issues": "https://github.com/phpstan/php-8-stubs/issues",
-                "source": "https://github.com/phpstan/php-8-stubs/tree/0.3.98"
+                "source": "https://github.com/phpstan/php-8-stubs/tree/0.3.99"
             },
-            "time": "2024-08-27T00:17:50+00:00"
+            "time": "2024-08-28T00:17:29+00:00"
         },
         {
             "name": "phpstan/phpdoc-parser",