diff --git a/tests/NHapi.Base.NUnit/NHapi.Base.NUnit.csproj b/tests/NHapi.Base.NUnit/NHapi.Base.NUnit.csproj
index f97f8c605..933ed175a 100644
--- a/tests/NHapi.Base.NUnit/NHapi.Base.NUnit.csproj
+++ b/tests/NHapi.Base.NUnit/NHapi.Base.NUnit.csproj
@@ -19,7 +19,7 @@
     <PackageReference Include="NUnit" Version="4.3.2" />
     <PackageReference Include="NUnit3TestAdapter" Version="6.1.0" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.0.0" />
-    <PackageReference Include="TimeZoneConverter" Version="7.2.0" />
+    <PackageReference Include="TimeZoneConverter" Version="8.0.0" />
 
     <PackageReference Include="coverlet.collector" Version="8.0.0">
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>