diff --git a/src/ZenIoc.Tests/ZenIoc.Tests.csproj b/src/ZenIoc.Tests/ZenIoc.Tests.csproj
index c092a89..a62dcfe 100644
--- a/src/ZenIoc.Tests/ZenIoc.Tests.csproj
+++ b/src/ZenIoc.Tests/ZenIoc.Tests.csproj
@@ -12,7 +12,7 @@
     <PackageReference Include="xunit.runner.visualstudio" Version="2.4.3" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.8.3" />
     <PackageReference Include="coverlet.msbuild" Version="3.0.3" />
-    <PackageReference Include="ReportGenerator" Version="4.8.7" />
+    <PackageReference Include="ReportGenerator" Version="5.1.19" />
     <PackageReference Include="Moq" Version="4.16.1" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.8.3" />
     <PackageReference Include="Zeebs.UnitTestHelpers" Version="1.0.2" />