diff --git a/CHANGELOG.md b/CHANGELOG.md
index 765e09f..25d65fe 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,11 @@
 # Changelog
 
+## [Unreleased]
+
+### Added
+
+- Support for PHPUnit `13`
+
 ## 6.9.0 - 2026-01-18
 
 ### Added
diff --git a/composer.json b/composer.json
index 13f51f2..486c345 100644
--- a/composer.json
+++ b/composer.json
@@ -17,9 +17,9 @@
     "require": {
         "php": "~8.2",
         "symfony/var-dumper": "~6.0|~7.0|~8.0",
-        "phpunit/phpunit": "~10.0|~11.0|~12.0",
-        "phpunit/php-timer": "~6.0|~7.0|~8.0",
-        "phpunit/php-code-coverage": "~10.1|~11.0|~12.0"
+        "phpunit/phpunit": "~10.0|~11.0|~12.0|~13.0",
+        "phpunit/php-timer": "~6.0|~7.0|~8.0|~9.0",
+        "phpunit/php-code-coverage": "~10.1|~11.0|~12.0|~13.0"
     },
     "autoload": {
         "psr-4": {
diff --git a/tests/Set/CompositeTest.php b/tests/Set/CompositeTest.php
index bb1b850..b776513 100644
--- a/tests/Set/CompositeTest.php
+++ b/tests/Set/CompositeTest.php
@@ -43,7 +43,8 @@ public function testImmutable()
         $this->assertInstanceOf(
             Set::class,
             Composite::immutable(
-                static function() {},
+                static function() {
+                },
                 FromGenerator::of(static function() {
                     yield 'e';
                     yield 'f';
diff --git a/tests/Set/DecorateTest.php b/tests/Set/DecorateTest.php
index 884bd1e..e4b1d47 100644
--- a/tests/Set/DecorateTest.php
+++ b/tests/Set/DecorateTest.php
@@ -40,7 +40,8 @@ public function testImmutable()
         $this->assertInstanceOf(
             Set::class,
             Decorate::immutable(
-                static function() {},
+                static function() {
+                },
                 FromGenerator::of(static function() {
                     yield 'e';
                     yield 'f';
diff --git a/tests/Set/FromGeneratorTest.php b/tests/Set/FromGeneratorTest.php
index 50ee245..dc93f58 100644
--- a/tests/Set/FromGeneratorTest.php
+++ b/tests/Set/FromGeneratorTest.php
@@ -28,7 +28,8 @@ public function testThrowWhenTheCallableDoesntReturnAGenerator()
         $this->expectException(\TypeError::class);
         $this->expectExceptionMessage('Argument 1 must be of type callable(): \Generator');
 
-        FromGenerator::of(static function() {});
+        FromGenerator::of(static function() {
+        });
     }
 
     public function testTake()