diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 5f392b4..b51fbea 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -23,10 +23,8 @@ jobs:
         uses: actions/setup-dotnet@v4
         with:
           dotnet-version: | 
-            5.0.x
-            6.0.x
-            7.0.x
             8.0.x
+            9.0.x
       - name: Run tests
         run: dotnet test --collect:"XPlat Code Coverage"  --logger "GitHubActions"
       - name: Upload coverage
diff --git a/Directory.Build.props b/Directory.Build.props
index f952f28..09534f7 100644
--- a/Directory.Build.props
+++ b/Directory.Build.props
@@ -18,7 +18,6 @@
     <PackageLicenseExpression>MIT</PackageLicenseExpression>
   </PropertyGroup>
   <ItemGroup>
-    <PackageReference Include="TestableIO.System.IO.Abstractions" Version="17.*" />
     <PackageReference Include="Nerdbank.GitVersioning" Version="3.6.133">
       <IncludeAssets>runtime; build; native; contentfiles; analyzers</IncludeAssets>
       <PrivateAssets>all</PrivateAssets>
diff --git a/global.json b/global.json
index 30906d5..2188816 100644
--- a/global.json
+++ b/global.json
@@ -1,6 +1,6 @@
 {
   "sdk": {
-    "version": "8.0.201",
+    "version": "9.0",
     "rollForward": "latestMinor"
   }
 }
diff --git a/src/System.IO.Abstractions.Extensions/System.IO.Abstractions.Extensions.csproj b/src/System.IO.Abstractions.Extensions/System.IO.Abstractions.Extensions.csproj
index 903aafb..f9abea8 100644
--- a/src/System.IO.Abstractions.Extensions/System.IO.Abstractions.Extensions.csproj
+++ b/src/System.IO.Abstractions.Extensions/System.IO.Abstractions.Extensions.csproj
@@ -8,6 +8,11 @@
 		<PackageReleaseNotes>$([System.IO.File]::ReadAllText("$(MSBuildProjectDirectory)/../../ReleaseNotes.md"))</PackageReleaseNotes>
 	</PropertyGroup>
 
+	<ItemGroup>
+	  <!-- Dependencies of TestableIO.System.IO.Abstractions changed in 22.0 -->
+	  <PackageReference Include="TestableIO.System.IO.Abstractions" Version="[17.*,22.0.0)" />
+	</ItemGroup>
+	
 	<ItemGroup>
 	  <Compile Update="Resources.Designer.cs">
 	    <DesignTime>True</DesignTime>
diff --git a/tests/System.IO.Abstractions.Extensions.Tests/System.IO.Abstractions.Extensions.Tests.csproj b/tests/System.IO.Abstractions.Extensions.Tests/System.IO.Abstractions.Extensions.Tests.csproj
index 87cd40e..f3ee503 100644
--- a/tests/System.IO.Abstractions.Extensions.Tests/System.IO.Abstractions.Extensions.Tests.csproj
+++ b/tests/System.IO.Abstractions.Extensions.Tests/System.IO.Abstractions.Extensions.Tests.csproj
@@ -1,14 +1,14 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
 	<PropertyGroup>
-		<TargetFrameworks>net8.0;net7.0;net6.0;net5.0</TargetFrameworks>
+		<TargetFrameworks>net9.0;net8.0</TargetFrameworks>
 		<TargetFrameworks Condition="!$([MSBuild]::IsOsUnixLike())">$(TargetFrameworks);net462</TargetFrameworks>
 		<IsPackable>false</IsPackable>
 		<IsTestable>true</IsTestable>
 	</PropertyGroup>
 
 	<ItemGroup>
-		<PackageReference Include="TestableIO.System.IO.Abstractions.Wrappers" Version="17.*" />
+		<PackageReference Include="TestableIO.System.IO.Abstractions.Wrappers" Version="21.3.1" />
 		<ProjectReference Include="..\..\src\System.IO.Abstractions.Extensions\System.IO.Abstractions.Extensions.csproj" />
 	</ItemGroup>