diff --git a/src/Mixins/Expectation.php b/src/Mixins/Expectation.php
index fa6c6ee8..2617fea4 100644
--- a/src/Mixins/Expectation.php
+++ b/src/Mixins/Expectation.php
@@ -6,6 +6,7 @@ namespace Pest\Mixins;
 
 use BadMethodCallException;
 use Closure;
+use Countable;
 use DateTimeInterface;
 use Error;
 use InvalidArgumentException;
@@ -275,10 +276,10 @@ final class Expectation
     /**
      * Asserts that the size of the value and $expected are the same.
      *
-     * @param  array<int|string, mixed>  $expected
+     * @param  Countable|iterable<mixed>  $expected
      * @return self<TValue>
      */
-    public function toHaveSameSize(iterable $expected, string $message = ''): self
+    public function toHaveSameSize(Countable|iterable $expected, string $message = ''): self
     {
         if (! is_countable($this->value) && ! is_iterable($this->value)) {
             InvalidExpectationValue::expected('countable|iterable');