diff --git a/Duplicati/UnitTest/TestUtils.cs b/Duplicati/UnitTest/TestUtils.cs
index b1828d5d9..af64aff14 100644
--- a/Duplicati/UnitTest/TestUtils.cs
+++ b/Duplicati/UnitTest/TestUtils.cs
@@ -247,7 +247,7 @@ namespace Duplicati.UnitTest
                 //OSX seem to like to actually set the time to some value earlier than what you set by tens of milliseconds.
                 //Reading the time right after it is set gives the expected value but when read later it is slightly different.
                 //Maybe a bug in .net?
-                var granularity = RuntimeInformation.IsOSPlatform(OSPlatform.OSX) ? 100 : 1;
+                var granularity = RuntimeInformation.IsOSPlatform(OSPlatform.OSX) ? 500 : 1;
                 Assert.That(
                     SystemIO.IO_OS.GetLastWriteTimeUtc(actualFile),
                     Is.EqualTo(SystemIO.IO_OS.GetLastWriteTimeUtc(expectedFile)).Within(granularity).Milliseconds,