diff --git a/src/Core/efcpt.6/efcpt.6.csproj b/src/Core/efcpt.6/efcpt.6.csproj
index f09905fdd..0a439c5fc 100644
--- a/src/Core/efcpt.6/efcpt.6.csproj
+++ b/src/Core/efcpt.6/efcpt.6.csproj
@@ -56,7 +56,7 @@
     <PackageReference Include="Microsoft.Extensions.Hosting" Version="8.0.1" />
     <PackageReference Include="NuGet.Protocol" Version="6.11.1" />
     <PackageReference Include="Spectre.Console" Version="0.49.1" />
-    <PackageReference Include="System.IO.Abstractions" Version="21.0.29" />
+    <PackageReference Include="System.IO.Abstractions" Version="21.1.3" />
   </ItemGroup>
 
   <ItemGroup>
diff --git a/src/Core/efcpt.8/efcpt.8.csproj b/src/Core/efcpt.8/efcpt.8.csproj
index 3e9da274d..64d60d022 100644
--- a/src/Core/efcpt.8/efcpt.8.csproj
+++ b/src/Core/efcpt.8/efcpt.8.csproj
@@ -49,7 +49,7 @@
     <PackageReference Include="Microsoft.Extensions.Hosting" Version="8.0.1" />
     <PackageReference Include="NuGet.Protocol" Version="6.11.1" />
     <PackageReference Include="Spectre.Console" Version="0.49.1" />
-    <PackageReference Include="System.IO.Abstractions" Version="21.0.29" />
+    <PackageReference Include="System.IO.Abstractions" Version="21.1.3" />
   </ItemGroup>
 
   <ItemGroup>
diff --git a/src/Core/efcpt.9/efcpt.9.csproj b/src/Core/efcpt.9/efcpt.9.csproj
index f32707e6a..90f095a6e 100644
--- a/src/Core/efcpt.9/efcpt.9.csproj
+++ b/src/Core/efcpt.9/efcpt.9.csproj
@@ -59,7 +59,7 @@
     <PackageReference Include="Microsoft.Extensions.Hosting" Version="8.0.1" />
     <PackageReference Include="NuGet.Protocol" Version="6.11.1" />
     <PackageReference Include="Spectre.Console" Version="0.49.1" />
-    <PackageReference Include="System.IO.Abstractions" Version="21.0.29" />
+    <PackageReference Include="System.IO.Abstractions" Version="21.1.3" />
   </ItemGroup>
 
   <ItemGroup>