diff --git a/tests/mutex/MutexConcurrencyTest.php b/tests/mutex/MutexConcurrencyTest.php
index ad5c6f05..97e733bd 100644
--- a/tests/mutex/MutexConcurrencyTest.php
+++ b/tests/mutex/MutexConcurrencyTest.php
@@ -103,6 +103,11 @@ public function testHighContention(\Closure $code, \Closure $mutexFactory): void
 
         $counter = $code(0);
         self::assertSame($concurrency * $iterations, $counter);
+
+        // workaround for burn testing
+        foreach (static::$temporaryFiles as $filename) {
+            file_put_contents($filename, '0');
+        }
     }
 
     /**