diff --git a/.Lib9c.Tests/Lib9c.Tests.csproj b/.Lib9c.Tests/Lib9c.Tests.csproj
index fb877391a1..4a788d2ffb 100644
--- a/.Lib9c.Tests/Lib9c.Tests.csproj
+++ b/.Lib9c.Tests/Lib9c.Tests.csproj
@@ -30,7 +30,7 @@
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-    <PackageReference Include="Serilog.Sinks.XUnit" Version="3.0.3" />
+    <PackageReference Include="Serilog.Sinks.XUnit" Version="3.0.5" />
     <PackageReference Include="Verify.Xunit" Version="17.2.1" />
     <PackageReference Include="xunit" Version="2.4.1" />
     <PackageReference Include="xunit.runner.visualstudio" Version="2.4.3" />