diff --git a/Jint.Tests/Runtime/EngineTests.cs b/Jint.Tests/Runtime/EngineTests.cs
index 01059497c6..6edd4eec62 100644
--- a/Jint.Tests/Runtime/EngineTests.cs
+++ b/Jint.Tests/Runtime/EngineTests.cs
@@ -20,12 +20,11 @@ public partial class EngineTests : IDisposable
         private readonly Engine _engine;
         private int countBreak = 0;
         private StepMode stepMode;
-        private static readonly TimeZoneInfo _pacificTimeZone;
-        private static readonly TimeZoneInfo _tongaTimeZone;
-        private static readonly TimeZoneInfo _easternTimeZone;
+        private readonly TimeZoneInfo _pacificTimeZone;
+        private readonly TimeZoneInfo _tongaTimeZone;
+        private readonly TimeZoneInfo _easternTimeZone;
 
-
-        static EngineTests()
+        public EngineTests(ITestOutputHelper output)
         {
             try
             {
@@ -59,10 +58,7 @@ static EngineTests()
                 // should be natively supported soon https://github.com/dotnet/runtime/issues/18644
                 _easternTimeZone = TimeZoneInfo.FindSystemTimeZoneById("America/New_York");
             }
-        }
 
-        public EngineTests(ITestOutputHelper output)
-        {
             _engine = new Engine()
                 .SetValue("log", new Action<object>(o => output.WriteLine(o.ToString())))
                 .SetValue("assert", new Action<bool>(Assert.True))