diff --git a/.gitignore b/.gitignore
index 5d38ddb..d6ad1f6 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,4 +1,5 @@
 composer.lock
 vendor/
 .idea
-.DS_STORE
\ No newline at end of file
+.phpunit.result.cache
+.DS_STORE
diff --git a/composer.json b/composer.json
index 881ddeb..d247dfc 100644
--- a/composer.json
+++ b/composer.json
@@ -5,11 +5,11 @@
         "files": ["src/functions.php"]
     },
     "require": {
-        "react/promise": "^2.0",
-        "guzzlehttp/promises": "^1.0"
+        "react/promise": "^3.0",
+        "guzzlehttp/promises": "^2.0"
     },
     "require-dev": {
-        "phpunit/phpunit": "^5.6"
+        "phpunit/phpunit": "^10.0"
     },
     "license": "MIT",
     "authors": [
diff --git a/phpunit.xml.dist b/phpunit.xml.dist
index cab45eb..ca4f242 100644
--- a/phpunit.xml.dist
+++ b/phpunit.xml.dist
@@ -1,17 +1,14 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<phpunit bootstrap="./tests/bootstrap.php"
-         colors="true">
-    <testsuites>
-        <testsuite>
-            <directory>tests</directory>
-        </testsuite>
-    </testsuites>
-    <filter>
-        <whitelist>
-            <directory suffix=".php">src</directory>
-            <exclude>
-                <directory suffix="Interface.php">src/</directory>
-            </exclude>
-        </whitelist>
-    </filter>
-</phpunit>
\ No newline at end of file
+<phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" bootstrap="./tests/bootstrap.php" colors="true" xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/10.5/phpunit.xsd">
+  <testsuites>
+    <testsuite name="tests">
+      <directory>tests</directory>
+    </testsuite>
+  </testsuites>
+  <coverage/>
+  <source>
+    <include>
+      <directory suffix=".php">src</directory>
+    </include>
+  </source>
+</phpunit>
diff --git a/src/functions.php b/src/functions.php
index 4d09714..b3d4284 100644
--- a/src/functions.php
+++ b/src/functions.php
@@ -2,17 +2,17 @@
 
 namespace Tickner\GuzzleToReactPromise;
 
-use GuzzleHttp\Promise\Promise as GuzzlePromise;
+use GuzzleHttp\Promise\PromiseInterface as GuzzlePromiseInterface;
 use React\Promise\Deferred as ReactDeferred;
-use React\Promise\Promise as ReactPromise;
+use React\Promise\PromiseInterface as ReactPromiseInterface;
 
 /**
- * Transforms a GuzzleHttp\Promise\Promise to a React\Promise\Promise.
+ * Transforms a GuzzleHttp\Promise\PromiseInterface to a React\Promise\PromiseInterface.
  *
  * @param GuzzlePromise $guzzlePromise
  * @return ReactPromise
  */
-function guzzleToReactPromise(GuzzlePromise $guzzlePromise) {
+function guzzleToReactPromise(GuzzlePromiseInterface $guzzlePromise): ReactPromiseInterface {
     $deferred = new ReactDeferred();
 
     $guzzlePromise->then(
@@ -30,9 +30,9 @@ function($error) use ($deferred) {
 /**
  * An alias for the "guzzleToReactPromise" function.
  *
- * @param GuzzlePromise $promise
- * @return ReactPromise
+ * @param GuzzlePromiseInterface $promise
+ * @return ReactPromiseInterface
  */
-function g2rp(GuzzlePromise $promise) {
+function g2rp(GuzzlePromiseInterface $promise): ReactPromiseInterface {
     return guzzleToReactPromise($promise);
 }
diff --git a/tests/FunctionG2rpTest.php b/tests/FunctionG2rpTest.php
index b303ac1..d08eb63 100644
--- a/tests/FunctionG2rpTest.php
+++ b/tests/FunctionG2rpTest.php
@@ -11,7 +11,7 @@ final class FunctionG2rpTest extends TestCase
     /**
      * @test
      */
-    public function g2rp_is_an_alias_for_guzzle_to_react_promise_function()
+    public function g2rp_is_an_alias_for_guzzle_to_react_promise_function(): void
     {
         $guzzlePromise = new GuzzlePromise();
         $reactPromise = \Tickner\GuzzleToReactPromise\g2rp($guzzlePromise);
diff --git a/tests/FunctionGuzzleToReactPromiseTest.php b/tests/FunctionGuzzleToReactPromiseTest.php
index cc13a3d..6c6822c 100644
--- a/tests/FunctionGuzzleToReactPromiseTest.php
+++ b/tests/FunctionGuzzleToReactPromiseTest.php
@@ -11,7 +11,7 @@ final class FunctionGuzzleToReactPromiseTest extends TestCase
     /**
      * @test
      */
-    public function it_converts_a_guzzle_promise_to_a_react_promise()
+    public function it_converts_a_guzzle_promise_to_a_react_promise(): void
     {
         $guzzlePromise = new GuzzlePromise();
         $reactPromise = \Tickner\GuzzleToReactPromise\guzzleToReactPromise($guzzlePromise);
@@ -21,7 +21,7 @@ public function it_converts_a_guzzle_promise_to_a_react_promise()
     /**
      * @test
      */
-    public function the_converted_react_promise_gets_fulfilled_when_the_guzzle_promise_resolves()
+    public function the_converted_react_promise_gets_fulfilled_when_the_guzzle_promise_resolves(): void
     {
         $guzzlePromise = new GuzzlePromise();
         $promisedVal = null;
@@ -77,6 +77,6 @@ function() {
     private function runGuzzlePromisesTaskQueue()
     {
         // Guzzle Promises require the use of a singleton \GuzzleHttp\Promise\TaskQueue
-        \GuzzleHttp\Promise\queue()->run();
+        \GuzzleHttp\Promise\Utils::queue()->run();
     }
 }