diff --git a/src/libraries/System.Runtime/tests/System/TimeZoneInfoTests.cs b/src/libraries/System.Runtime/tests/System/TimeZoneInfoTests.cs
index 05ae478a9d548e..0e8390632acf0d 100644
--- a/src/libraries/System.Runtime/tests/System/TimeZoneInfoTests.cs
+++ b/src/libraries/System.Runtime/tests/System/TimeZoneInfoTests.cs
@@ -2469,7 +2469,7 @@ public static void GetSystemTimeZones_AllTimeZonesHaveOffsetInValidRange()
         [InlineData("<+00>0<+01>,A/0,J365/25", 0, 0, false)]
         public static void NJulianRuleTest(string posixRule, int dayNumber, int monthNumber, bool shouldSucceed)
         {
-            string zoneFilePath = Path.GetTempPath() + "dotnet_tz";
+            string zoneFilePath = Path.GetTempPath() + Path.GetRandomFileName();
             using (FileStream fs = new FileStream(zoneFilePath, FileMode.Create))
             {
                 fs.Write(timeZoneFileContents.AsSpan());