diff --git a/src/Logging/TeamCity.php b/src/Logging/TeamCity.php
index fded41e4..c482836c 100644
--- a/src/Logging/TeamCity.php
+++ b/src/Logging/TeamCity.php
@@ -4,6 +4,8 @@ declare(strict_types=1);
 
 namespace Pest\Logging;
 
+use PHPUnit\Framework\TestCase;
+use PHPUnit\Runner\PhptTestCase;
 use function getmypid;
 use Pest\Concerns\Testable;
 use PHPUnit\Framework\AssertionFailedError;
@@ -137,6 +139,12 @@ final class TeamCity extends DefaultResultPrinter
             return;
         }
 
+        if ($test instanceof TestCase) {
+            $this->numAssertions += $test->getNumAssertions();
+        } elseif ($test instanceof PhptTestCase) {
+            $this->numAssertions++;
+        }
+
         $this->printEvent('testFinished', [
             self::NAME     => $test->getName(),
             self::DURATION => self::toMilliseconds($time),