diff --git a/PostfixNumberRemover.Tests/PostfixNumberRemover.Tests.csproj b/PostfixNumberRemover.Tests/PostfixNumberRemover.Tests.csproj
index 30eef5b..f1c905a 100644
--- a/PostfixNumberRemover.Tests/PostfixNumberRemover.Tests.csproj
+++ b/PostfixNumberRemover.Tests/PostfixNumberRemover.Tests.csproj
@@ -9,7 +9,7 @@
     <PackageReference Include="nunit" Version="3.13.3" />
     <PackageReference Include="NUnit3TestAdapter" Version="4.2.1" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.3.1" />
-    <PackageReference Include="System.IO.Abstractions.TestingHelpers" Version="17.0.23" />
+    <PackageReference Include="System.IO.Abstractions.TestingHelpers" Version="17.1.1" />
   </ItemGroup>
 
   <ItemGroup>