diff --git a/ClosedXML_Tests/ClosedXML_Tests.csproj b/ClosedXML_Tests/ClosedXML_Tests.csproj
index 816d98d..712748b 100644
--- a/ClosedXML_Tests/ClosedXML_Tests.csproj
+++ b/ClosedXML_Tests/ClosedXML_Tests.csproj
@@ -42,7 +42,7 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="NUnit" Version="3.7.1" />
+    <PackageReference Include="NUnit" Version="3.8.1" />
     <PackageReference Include="NUnit3TestAdapter" Version="3.8.0" />
   </ItemGroup>