diff --git a/Tests/Parallelism.cs b/Tests/Parallelism.cs
index c6f8089..f45d8f2 100644
--- a/Tests/Parallelism.cs
+++ b/Tests/Parallelism.cs
@@ -1,6 +1,6 @@
 using NUnit.Framework;
 
-[assembly: LevelOfParallelism(30)]
+[assembly: LevelOfParallelism(1)]
 namespace Tests
 {
 }