diff --git a/PostfixNumberRemover.Tests/PostfixNumberRemover.Tests.csproj b/PostfixNumberRemover.Tests/PostfixNumberRemover.Tests.csproj
index 6141da1..cd26449 100644
--- a/PostfixNumberRemover.Tests/PostfixNumberRemover.Tests.csproj
+++ b/PostfixNumberRemover.Tests/PostfixNumberRemover.Tests.csproj
@@ -10,7 +10,7 @@
     <PackageReference Include="nunit" Version="3.12.0" />
     <PackageReference Include="NUnit3TestAdapter" Version="3.13.0" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.2.0" />
-    <PackageReference Include="System.IO.Abstractions.TestingHelpers" Version="6.0.15" />
+    <PackageReference Include="System.IO.Abstractions.TestingHelpers" Version="16.1.15" />
   </ItemGroup>
 
   <ItemGroup>