diff --git a/ChangeLog-9.6.md b/ChangeLog-9.6.md
index 258e386c67e..ae8deb41c82 100644
--- a/ChangeLog-9.6.md
+++ b/ChangeLog-9.6.md
@@ -2,6 +2,12 @@
 
 All notable changes of the PHPUnit 9.6 release series are documented in this file using the [Keep a CHANGELOG](https://keepachangelog.com/) principles.
 
+## [9.6.2] - 2023-MM-DD
+
+### Fixed
+
+* [#4618](https://github.com/sebastianbergmann/phpunit/issues/4618): Support for generators in `assertCount()` etc. is not marked as deprecated in PHPUnit 9.6
+
 ## [9.6.1] - 2023-02-03
 
 ### Fixed
@@ -18,5 +24,6 @@ All notable changes of the PHPUnit 9.6 release series are documented in this fil
 * [#5064](https://github.com/sebastianbergmann/phpunit/issues/5064): Deprecate `PHPUnit\Framework\TestCase::getMockClass()`
 * [#5132](https://github.com/sebastianbergmann/phpunit/issues/5132): Deprecate `Test` suffix for abstract test case classes
 
+[9.6.2]: https://github.com/sebastianbergmann/phpunit/compare/9.6.1...9.6
 [9.6.1]: https://github.com/sebastianbergmann/phpunit/compare/9.6.0...9.6.1
 [9.6.0]: https://github.com/sebastianbergmann/phpunit/compare/9.5.28...9.6.0
diff --git a/src/Framework/Assert.php b/src/Framework/Assert.php
index a8e632329ce..156220a5105 100644
--- a/src/Framework/Assert.php
+++ b/src/Framework/Assert.php
@@ -37,6 +37,7 @@
 use DOMAttr;
 use DOMDocument;
 use DOMElement;
+use Generator;
 use PHPUnit\Framework\Constraint\ArrayHasKey;
 use PHPUnit\Framework\Constraint\Callback;
 use PHPUnit\Framework\Constraint\ClassHasAttribute;
@@ -278,6 +279,10 @@ public static function assertNotContainsOnly(string $type, iterable $haystack, ?
      */
     public static function assertCount(int $expectedCount, $haystack, string $message = ''): void
     {
+        if ($haystack instanceof Generator) {
+            self::createWarning('Passing an argument of type Generator for the $haystack parameter is deprecated. Support for this will be removed in PHPUnit 10.');
+        }
+
         if (!$haystack instanceof Countable && !is_iterable($haystack)) {
             throw InvalidArgumentException::create(2, 'countable or iterable');
         }
@@ -300,6 +305,10 @@ public static function assertCount(int $expectedCount, $haystack, string $messag
      */
     public static function assertNotCount(int $expectedCount, $haystack, string $message = ''): void
     {
+        if ($haystack instanceof Generator) {
+            self::createWarning('Passing an argument of type Generator for the $haystack parameter is deprecated. Support for this will be removed in PHPUnit 10.');
+        }
+
         if (!$haystack instanceof Countable && !is_iterable($haystack)) {
             throw InvalidArgumentException::create(2, 'countable or iterable');
         }
@@ -451,6 +460,10 @@ public static function assertObjectEquals(object $expected, object $actual, stri
      */
     public static function assertEmpty($actual, string $message = ''): void
     {
+        if ($actual instanceof Generator) {
+            self::createWarning('Passing an argument of type Generator for the $actual parameter is deprecated. Support for this will be removed in PHPUnit 10.');
+        }
+
         static::assertThat($actual, static::isEmpty(), $message);
     }
 
@@ -464,6 +477,10 @@ public static function assertEmpty($actual, string $message = ''): void
      */
     public static function assertNotEmpty($actual, string $message = ''): void
     {
+        if ($actual instanceof Generator) {
+            self::createWarning('Passing an argument of type Generator for the $actual parameter is deprecated. Support for this will be removed in PHPUnit 10.');
+        }
+
         static::assertThat($actual, static::logicalNot(static::isEmpty()), $message);
     }
 
@@ -1925,6 +1942,14 @@ public static function assertNotRegExp(string $pattern, string $string, string $
      */
     public static function assertSameSize($expected, $actual, string $message = ''): void
     {
+        if ($expected instanceof Generator) {
+            self::createWarning('Passing an argument of type Generator for the $expected parameter is deprecated. Support for this will be removed in PHPUnit 10.');
+        }
+
+        if ($actual instanceof Generator) {
+            self::createWarning('Passing an argument of type Generator for the $actual parameter is deprecated. Support for this will be removed in PHPUnit 10.');
+        }
+
         if (!$expected instanceof Countable && !is_iterable($expected)) {
             throw InvalidArgumentException::create(1, 'countable or iterable');
         }
@@ -1953,6 +1978,14 @@ public static function assertSameSize($expected, $actual, string $message = ''):
      */
     public static function assertNotSameSize($expected, $actual, string $message = ''): void
     {
+        if ($expected instanceof Generator) {
+            self::createWarning('Passing an argument of type Generator for the $expected parameter is deprecated. Support for this will be removed in PHPUnit 10.');
+        }
+
+        if ($actual instanceof Generator) {
+            self::createWarning('Passing an argument of type Generator for the $actual parameter is deprecated. Support for this will be removed in PHPUnit 10.');
+        }
+
         if (!$expected instanceof Countable && !is_iterable($expected)) {
             throw InvalidArgumentException::create(1, 'countable or iterable');
         }