diff --git a/src/Zeebs.UnitTestHelpers.Tests/Zeebs.UnitTestHelpers.Tests.csproj b/src/Zeebs.UnitTestHelpers.Tests/Zeebs.UnitTestHelpers.Tests.csproj
index 087ee7f..2b0bb96 100644
--- a/src/Zeebs.UnitTestHelpers.Tests/Zeebs.UnitTestHelpers.Tests.csproj
+++ b/src/Zeebs.UnitTestHelpers.Tests/Zeebs.UnitTestHelpers.Tests.csproj
@@ -11,7 +11,7 @@
     <PackageReference Include="xunit" Version="2.4.1" />
     <PackageReference Include="xunit.runner.visualstudio" Version="2.4.3" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.8.3" />
-    <PackageReference Include="coverlet.msbuild" Version="2.9.0" />
+    <PackageReference Include="coverlet.msbuild" Version="3.1.1" />
     <PackageReference Include="ReportGenerator" Version="4.8.2" />
     <PackageReference Include="Moq" Version="4.15.2" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.8.3" />