diff --git a/CHANGELOG.md b/CHANGELOG.md
index 09b2bd4c..76a3bc2a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,7 +1,7 @@
 # CHANGELOG for PHP CS Fixer: custom fixers
 
 ## v3.24.0
-- Add PhpUnitRequiresExplicitConstraintFixer
+- Add PhpUnitRequiresConstraintFixer
 
 ## v3.23.0
 - Add ClassConstantUsageFixer
diff --git a/README.md b/README.md
index 75fa6b19..ee79dbfd 100644
--- a/README.md
+++ b/README.md
@@ -5,7 +5,7 @@
 [![Latest stable version](https://img.shields.io/packagist/v/kubawerlos/php-cs-fixer-custom-fixers.svg?label=current%20version)](https://packagist.org/packages/kubawerlos/php-cs-fixer-custom-fixers)
 [![PHP version](https://img.shields.io/packagist/php-v/kubawerlos/php-cs-fixer-custom-fixers.svg)](https://php.net)
 [![License](https://img.shields.io/github/license/kubawerlos/php-cs-fixer-custom-fixers.svg)](LICENSE)
-![Tests](https://img.shields.io/badge/tests-3607-brightgreen.svg)
+![Tests](https://img.shields.io/badge/tests-3610-brightgreen.svg)
 [![Downloads](https://img.shields.io/packagist/dt/kubawerlos/php-cs-fixer-custom-fixers.svg)](https://packagist.org/packages/kubawerlos/php-cs-fixer-custom-fixers)
 
 [![CI status](https://github.com/kubawerlos/php-cs-fixer-custom-fixers/actions/workflows/ci.yaml/badge.svg)](https://github.com/kubawerlos/php-cs-fixer-custom-fixers/actions/workflows/ci.yaml)
@@ -463,14 +463,20 @@ PHPUnit `fail`, `markTestIncomplete` and `markTestSkipped` functions must not be
  }
 ```
 
-#### PhpUnitRequiresExplicitConstraintFixer
-Assertions and attributes for PHP and PHPUnit versions must have explicit version constraint.
+#### PhpUnitRequiresConstraintFixer
+Assertions and attributes for PHP and PHPUnit versions must have explicit version constraint and space after comparison operator.
 ```diff
  <?php
- class FooTest extends TestCase {
+ class MyTest extends TestCase {
+     /**
+-     * @requires PHP 8.1
++     * @requires PHP >= 8.1
+      */
+     public function testFoo() {}
+ 
      /**
--     * @requires PHP 8.4
-+     * @requires PHP >= 8.4
+-     * @requires PHP <8.3
++     * @requires PHP < 8.3
       */
      public function testBar() {}
  
diff --git a/src/Fixer/PhpUnitRequiresExplicitConstraintFixer.php b/src/Fixer/PhpUnitRequiresConstraintFixer.php
similarity index 89%
rename from src/Fixer/PhpUnitRequiresExplicitConstraintFixer.php
rename to src/Fixer/PhpUnitRequiresConstraintFixer.php
index 723c56d5..3444aa1d 100644
--- a/src/Fixer/PhpUnitRequiresExplicitConstraintFixer.php
+++ b/src/Fixer/PhpUnitRequiresConstraintFixer.php
@@ -23,18 +23,23 @@
 use PhpCsFixer\Tokenizer\Token;
 use PhpCsFixer\Tokenizer\Tokens;
 
-final class PhpUnitRequiresExplicitConstraintFixer extends AbstractFixer
+final class PhpUnitRequiresConstraintFixer extends AbstractFixer
 {
     public function getDefinition(): FixerDefinitionInterface
     {
         return new FixerDefinition(
-            'Assertions and attributes for PHP and PHPUnit versions must have explicit version constraint.',
+            'Assertions and attributes for PHP and PHPUnit versions must have explicit version constraint and space after comparison operator.',
             [new CodeSample(
                 <<<'PHP'
                 <?php
-                class FooTest extends TestCase {
+                class MyTest extends TestCase {
                     /**
-                     * @requires PHP 8.4
+                     * @requires PHP 8.1
+                     */
+                    public function testFoo() {}
+
+                    /**
+                     * @requires PHP <8.3
                      */
                     public function testBar() {}
 
@@ -115,11 +120,8 @@ static function (array $matches): string {
                     \assert(\is_string($matches[1]));
                     \assert(\is_string($matches[2]));
                     \assert(\is_string($matches[3]));
-                    if (Preg::match('/^[\\d\\.-]+(dev|(RC|alpha|beta)[\\d\\.])?$/', $matches[2])) {
-                        $matches[2] = '>= ' . $matches[2];
-                    }
 
-                    return $matches[1] . $matches[2] . $matches[3];
+                    return $matches[1] . self::fixString($matches[2]) . $matches[3];
                 },
                 $tokens[$index]->getContent(),
             ),
@@ -161,9 +163,9 @@ private static function fixAttribute(Tokens $tokens, int $index): void
     private static function fixString(string $string): string
     {
         if (Preg::match('/^[\\d\\.-]+(dev|(RC|alpha|beta)[\\d\\.])?$/', $string)) {
-            return '>= ' . $string;
+            $string = '>=' . $string;
         }
 
-        return $string;
+        return Preg::replace('/^([<>=!]{0,2})\\s*([\\d\\.-]+(dev|(RC|alpha|beta)[\\d\\.])?)$/', '$1 $2', $string);
     }
 }
diff --git a/tests/Fixer/PhpUnitRequiresExplicitConstraintFixerTest.php b/tests/Fixer/PhpUnitRequiresConstraintFixerTest.php
similarity index 86%
rename from tests/Fixer/PhpUnitRequiresExplicitConstraintFixerTest.php
rename to tests/Fixer/PhpUnitRequiresConstraintFixerTest.php
index bc081c5c..53b7bedc 100644
--- a/tests/Fixer/PhpUnitRequiresExplicitConstraintFixerTest.php
+++ b/tests/Fixer/PhpUnitRequiresConstraintFixerTest.php
@@ -14,9 +14,9 @@
 /**
  * @internal
  *
- * @covers \PhpCsFixerCustomFixers\Fixer\PhpUnitRequiresExplicitConstraintFixer
+ * @covers \PhpCsFixerCustomFixers\Fixer\PhpUnitRequiresConstraintFixer
  */
-final class PhpUnitRequiresExplicitConstraintFixerTest extends AbstractFixerTestCase
+final class PhpUnitRequiresConstraintFixerTest extends AbstractFixerTestCase
 {
     public function testIsRisky(): void
     {
@@ -224,6 +224,21 @@ public function testFoo(): void {}
                 public function testFoo(): void {}
             }',
         ];
+
+        yield 'attributes with comparison constraints' => [
+            '<?php class FooTest extends TestCase {
+                #[\\LeaveMeAlone("1.2")]
+                #[\\PHPUnit\\Framework\\Attributes\\RequiresPhp("!= 8.2")]
+                #[\\PHPUnit\\Framework\\Attributes\\RequiresPhpunit("< 11")]
+                public function testFoo(): void {}
+            }',
+            '<?php class FooTest extends TestCase {
+                #[\\LeaveMeAlone("1.2")]
+                #[\\PHPUnit\\Framework\\Attributes\\RequiresPhp("!=8.2")]
+                #[\\PHPUnit\\Framework\\Attributes\\RequiresPhpunit("<11")]
+                public function testFoo(): void {}
+            }',
+        ];
     }
 
     /**
@@ -233,7 +248,7 @@ private static function getFixCases(): iterable
     {
         yield 'no PHPDoc' => [''];
 
-        yield 'single annotation' => [
+        yield 'single annotation without operator' => [
             '/**
               * @requires PHP >= 8.4
               */',
@@ -242,6 +257,15 @@ private static function getFixCases(): iterable
               */',
         ];
 
+        yield 'single annotation without space' => [
+            '/**
+              * @requires PHP >= 8.4
+              */',
+            '/**
+              * @requires PHP >=8.4
+              */',
+        ];
+
         yield 'annotation with trailing spaces' => [
             '/**
               * @requires PHP >= 8.4    ' . '
@@ -253,12 +277,12 @@ private static function getFixCases(): iterable
 
         yield 'multiple annotations' => [
             '/**
-              * @requires PHP >= 7
-              * @requires PHPUnit >= 11
+              * @requires PHP > 7
+              * @requires PHPUnit < 12
               */',
             '/**
-              * @requires PHP 7
-              * @requires PHPUnit 11
+              * @requires PHP >7
+              * @requires PHPUnit <    12
               */',
         ];
     }