diff --git a/.Lib9c.Tests/Lib9c.Tests.csproj b/.Lib9c.Tests/Lib9c.Tests.csproj
index 5236efc10e..2870f1c99c 100644
--- a/.Lib9c.Tests/Lib9c.Tests.csproj
+++ b/.Lib9c.Tests/Lib9c.Tests.csproj
@@ -36,7 +36,7 @@
     <PackageReference Include="xunit.runner.visualstudio" Version="2.4.3" />
     <PackageReference Include="coverlet.collector" Version="3.2.0" />
     <PackageReference Include="System.IO.Abstractions" Version="12.2.6" />
-    <PackageReference Include="System.IO.Abstractions.TestingHelpers" Version="12.2.6" />
+    <PackageReference Include="System.IO.Abstractions.TestingHelpers" Version="22.0.10" />
 
     <PackageReference Include="StyleCop.Analyzers" Version="1.1.118">
       <PrivateAssets>all</PrivateAssets>