diff --git a/Build/_build.csproj b/Build/_build.csproj
index 6d7e45f810..d22d96260e 100644
--- a/Build/_build.csproj
+++ b/Build/_build.csproj
@@ -11,14 +11,14 @@
   </PropertyGroup>
   <ItemGroup>
     <PackageDownload Include="GitVersion.Tool" Version="[6.5.1]" />
-    <PackageDownload Include="ReportGenerator" Version="[5.5.5]" />
+    <PackageDownload Include="ReportGenerator" Version="[5.5.10]" />
     <PackageDownload Include="xunit.runner.console" Version="[2.9.3]" />
     <PackageDownload Include="PackageGuard" Version="[1.6.1]" />
     <PackageReference Include="LibGit2Sharp" Version="0.31.0" />
     <PackageReference Include="NuGet.Packaging" Version="[6.14.3,7.0.0)" />
     <PackageReference Include="Nuke.Common" Version="$(NukeVersion)" />
     <PackageReference Include="Nuke.Components" Version="$(NukeVersion)" />
-    <PackageReference Include="SharpCompress" Version="0.48.0" />
+    <PackageReference Include="SharpCompress" Version="0.49.1" />
     <PackageReference Include="System.Security.Cryptography.Xml" Version="[9.0.15,10.0.0)" />
   </ItemGroup>
 </Project>
diff --git a/Src/FluentAssertions/FluentAssertions.csproj b/Src/FluentAssertions/FluentAssertions.csproj
index 327d5ffbb9..d105dcd425 100644
--- a/Src/FluentAssertions/FluentAssertions.csproj
+++ b/Src/FluentAssertions/FluentAssertions.csproj
@@ -55,12 +55,13 @@
 
   <PropertyGroup Label="PolySharp">
     <PolySharpIncludeRuntimeSupportedAttributes>true</PolySharpIncludeRuntimeSupportedAttributes>
+    <PolySharpUseEmbeddedAttributeForGeneratedTypes>false</PolySharpUseEmbeddedAttributeForGeneratedTypes>
   </PropertyGroup>
 
   <ItemGroup Label="Analyzers">
     <AdditionalFiles Include="BannedSymbols.txt" />
     <PackageReference Include="JetBrains.Annotations" Version="2025.2.4" PrivateAssets="all" />
-    <PackageReference Include="PolySharp" Version="1.15.0" PrivateAssets="all" />
+    <PackageReference Include="PolySharp" Version="1.16.0" PrivateAssets="all" />
   </ItemGroup>
 
   <!-- Target framework dependent configuration -->
diff --git a/Tests/Approval.Tests/Approval.Tests.csproj b/Tests/Approval.Tests/Approval.Tests.csproj
index 112bf8a4d7..e53843bb32 100644
--- a/Tests/Approval.Tests/Approval.Tests.csproj
+++ b/Tests/Approval.Tests/Approval.Tests.csproj
@@ -13,8 +13,8 @@
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>
     <PackageReference Include="PublicApiGenerator" Version="11.5.4" />
-    <PackageReference Include="Verify.DiffPlex" Version="3.1.2" />
-    <PackageReference Include="Verify.XunitV3" Version="31.16.3" />
+    <PackageReference Include="Verify.DiffPlex" Version="3.2.0" />
+    <PackageReference Include="Verify.XunitV3" Version="31.19.0" />
   </ItemGroup>
 
 </Project>
diff --git a/Tests/FluentAssertions.Equivalency.Specs/IsExternalInit.cs b/Tests/FluentAssertions.Equivalency.Specs/IsExternalInit.cs
deleted file mode 100644
index e4b143e44e..0000000000
--- a/Tests/FluentAssertions.Equivalency.Specs/IsExternalInit.cs
+++ /dev/null
@@ -1,11 +0,0 @@
-using System.ComponentModel;
-
-// ReSharper disable once CheckNamespace
-namespace System.Runtime.CompilerServices;
-
-/// <summary>
-/// Reserved to be used by the compiler for tracking metadata.
-/// This class should not be used by developers in source code.
-/// </summary>
-[EditorBrowsable(EditorBrowsableState.Never)]
-internal static class IsExternalInit;
diff --git a/Tests/FluentAssertions.Extensibility.Specs/FluentAssertions.Extensibility.Specs.csproj b/Tests/FluentAssertions.Extensibility.Specs/FluentAssertions.Extensibility.Specs.csproj
index 1dba3a2c52..7518698ce8 100644
--- a/Tests/FluentAssertions.Extensibility.Specs/FluentAssertions.Extensibility.Specs.csproj
+++ b/Tests/FluentAssertions.Extensibility.Specs/FluentAssertions.Extensibility.Specs.csproj
@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
     <TargetFrameworks>net47;net6.0;net8.0</TargetFrameworks>
@@ -14,10 +14,6 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="PolySharp" Version="1.15.0">
-      <PrivateAssets>all</PrivateAssets>
-      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
-    </PackageReference>
     <PackageReference Include="xunit" Version="2.9.3" />
     <PackageReference Include="xunit.runner.visualstudio" Version="2.8.2">
       <PrivateAssets>all</PrivateAssets>
diff --git a/Tests/FluentAssertions.Specs/IsExternalInit.cs b/Tests/FluentAssertions.Specs/IsExternalInit.cs
deleted file mode 100644
index e4b143e44e..0000000000
--- a/Tests/FluentAssertions.Specs/IsExternalInit.cs
+++ /dev/null
@@ -1,11 +0,0 @@
-using System.ComponentModel;
-
-// ReSharper disable once CheckNamespace
-namespace System.Runtime.CompilerServices;
-
-/// <summary>
-/// Reserved to be used by the compiler for tracking metadata.
-/// This class should not be used by developers in source code.
-/// </summary>
-[EditorBrowsable(EditorBrowsableState.Never)]
-internal static class IsExternalInit;
diff --git a/Tests/TestFrameworks/NUnit4.Specs/NUnit4.Specs.csproj b/Tests/TestFrameworks/NUnit4.Specs/NUnit4.Specs.csproj
index 38663aa3a4..0fb81248a4 100644
--- a/Tests/TestFrameworks/NUnit4.Specs/NUnit4.Specs.csproj
+++ b/Tests/TestFrameworks/NUnit4.Specs/NUnit4.Specs.csproj
@@ -12,7 +12,7 @@
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.13.0" />
-    <PackageReference Include="NUnit" Version="4.6.0" />
+    <PackageReference Include="NUnit" Version="4.6.1" />
     <PackageReference Include="NUnit3TestAdapter" Version="5.2.0">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
diff --git a/Tests/TestFrameworks/TUnit.Specs/TUnit.Specs.csproj b/Tests/TestFrameworks/TUnit.Specs/TUnit.Specs.csproj
index ae89b6c1ae..296d49266c 100644
--- a/Tests/TestFrameworks/TUnit.Specs/TUnit.Specs.csproj
+++ b/Tests/TestFrameworks/TUnit.Specs/TUnit.Specs.csproj
@@ -11,7 +11,7 @@
     <ProjectReference Include="..\..\..\Src\FluentAssertions\FluentAssertions.csproj" />
   </ItemGroup>
   <ItemGroup>
-    <PackageReference Include="TUnit" Version="1.37.0" />
+    <PackageReference Include="TUnit" Version="1.48.6" />
   </ItemGroup>
 
 </Project>