diff --git a/composer.json b/composer.json
index 8f8f170..3f6158c 100644
--- a/composer.json
+++ b/composer.json
@@ -14,7 +14,7 @@
         "ext-parallel": "*",
         "react-parallel/event-loop": "dev-master as 2.0",
         "react/event-loop": "^1.1",
-        "react/promise": "^2.7",
+        "react/promise": "^2.7 || ^3.0",
         "wyrihaximus/constants": "^1.6"
     },
     "require-dev": {
diff --git a/composer.lock b/composer.lock
index 2289ba8..b018fd0 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": "d2ead3bcdffb03a5011820a9ccefb05a",
+    "content-hash": "0ed1b0566043aebf3de9d769aff78446",
     "packages": [
         {
             "name": "lcobucci/clock",
@@ -382,23 +382,24 @@
         },
         {
             "name": "react/promise",
-            "version": "v2.11.0",
+            "version": "v3.1.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/reactphp/promise.git",
-                "reference": "1a8460931ea36dc5c76838fec5734d55c88c6831"
+                "reference": "e563d55d1641de1dea9f5e84f3cccc66d2bfe02c"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/reactphp/promise/zipball/1a8460931ea36dc5c76838fec5734d55c88c6831",
-                "reference": "1a8460931ea36dc5c76838fec5734d55c88c6831",
+                "url": "https://api.github.com/repos/reactphp/promise/zipball/e563d55d1641de1dea9f5e84f3cccc66d2bfe02c",
+                "reference": "e563d55d1641de1dea9f5e84f3cccc66d2bfe02c",
                 "shasum": ""
             },
             "require": {
-                "php": ">=5.4.0"
+                "php": ">=7.1.0"
             },
             "require-dev": {
-                "phpunit/phpunit": "^9.6 || ^5.7 || ^4.8.36"
+                "phpstan/phpstan": "1.10.39 || 1.4.10",
+                "phpunit/phpunit": "^9.6 || ^7.5"
             },
             "type": "library",
             "autoload": {
@@ -442,7 +443,7 @@
             ],
             "support": {
                 "issues": "https://github.com/reactphp/promise/issues",
-                "source": "https://github.com/reactphp/promise/tree/v2.11.0"
+                "source": "https://github.com/reactphp/promise/tree/v3.1.0"
             },
             "funding": [
                 {
@@ -450,7 +451,7 @@
                     "type": "open_collective"
                 }
             ],
-            "time": "2023-11-16T16:16:50+00:00"
+            "time": "2023-11-16T16:21:57+00:00"
         },
         {
             "name": "reactivex/rxphp",
diff --git a/tests/RuntimeTest.php b/tests/RuntimeTest.php
index e9c06e3..a6f8075 100644
--- a/tests/RuntimeTest.php
+++ b/tests/RuntimeTest.php
@@ -6,18 +6,15 @@
 
 use parallel\Runtime\Error\Closed;
 use React\EventLoop\Loop;
-use React\Promise\ExtendedPromiseInterface;
 use ReactParallel\EventLoop\EventLoopBridge;
 use ReactParallel\Runtime\Runtime;
 use TheOrville\Exceptions\LatchcombException;
 use WyriHaximus\AsyncTestUtilities\AsyncTestCase;
 
-use function assert;
 use function React\Async\await;
 use function sleep;
 use function WyriHaximus\React\timedPromise;
 
-/** @internal */
 final class RuntimeTest extends AsyncTestCase
 {
     /** @test */
@@ -30,7 +27,6 @@ public function convertSuccess(): void
 
             return 3;
         });
-        assert($promise instanceof ExtendedPromiseInterface);
 
         $promise->always(static function () use ($runtime): void {
             $runtime->kill();
@@ -54,7 +50,6 @@ public function convertFailure(): void
 
             throw new LatchcombException('Rethrow exception');
         });
-        assert($promise instanceof ExtendedPromiseInterface);
 
         $promise->always(static function () use ($runtime): void {
             $runtime->close();
@@ -78,7 +73,6 @@ public function weClosedTheThread(): void
                 return 3;
             });
         });
-        assert($promise instanceof ExtendedPromiseInterface);
 
         Loop::futureTick(static function () use ($runtime): void {
             $runtime->close();
@@ -100,7 +94,6 @@ public function weKilledTheThread(): void
                 return 3;
             });
         });
-        assert($promise instanceof ExtendedPromiseInterface);
 
         Loop::futureTick(static function () use ($runtime): void {
             $runtime->kill();