diff --git a/InterfaceStubGenerator.Roslyn38/InterfaceStubGenerator.Roslyn38.csproj b/InterfaceStubGenerator.Roslyn38/InterfaceStubGenerator.Roslyn38.csproj
index d1168c1c3..766bbe96a 100644
--- a/InterfaceStubGenerator.Roslyn38/InterfaceStubGenerator.Roslyn38.csproj
+++ b/InterfaceStubGenerator.Roslyn38/InterfaceStubGenerator.Roslyn38.csproj
@@ -9,7 +9,7 @@
     <SignAssembly>true</SignAssembly>
     <IsRoslynComponent>true</IsRoslynComponent>
     <Nullable>enable</Nullable>
-    <MsCACSharpVersion>3.8.0</MsCACSharpVersion>
+    <MsCACSharpVersion>3.11.0</MsCACSharpVersion>
     <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
   </PropertyGroup>
 
diff --git a/InterfaceStubGenerator.Roslyn41/InterfaceStubGenerator.Roslyn41.csproj b/InterfaceStubGenerator.Roslyn41/InterfaceStubGenerator.Roslyn41.csproj
index 256ef3842..0c7b6edcc 100644
--- a/InterfaceStubGenerator.Roslyn41/InterfaceStubGenerator.Roslyn41.csproj
+++ b/InterfaceStubGenerator.Roslyn41/InterfaceStubGenerator.Roslyn41.csproj
@@ -10,7 +10,7 @@
     <IsRoslynComponent>true</IsRoslynComponent>
     <Nullable>enable</Nullable>
     <DefineConstants>$(DefineConstants);ROSLYN_4</DefineConstants>
-    <MsCACSharpVersion>4.1.0</MsCACSharpVersion>
+    <MsCACSharpVersion>4.14.0</MsCACSharpVersion>
     <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
   </PropertyGroup>
 
diff --git a/InterfaceStubGenerator.Roslyn50/InterfaceStubGenerator.Roslyn50.csproj b/InterfaceStubGenerator.Roslyn50/InterfaceStubGenerator.Roslyn50.csproj
index 6999fb3b3..a9e14e720 100644
--- a/InterfaceStubGenerator.Roslyn50/InterfaceStubGenerator.Roslyn50.csproj
+++ b/InterfaceStubGenerator.Roslyn50/InterfaceStubGenerator.Roslyn50.csproj
@@ -10,7 +10,7 @@
     <IsRoslynComponent>true</IsRoslynComponent>
     <Nullable>enable</Nullable>
     <DefineConstants>$(DefineConstants);ROSLYN_4;ROSLYN_5</DefineConstants>
-    <MsCACSharpVersion>5.0.0</MsCACSharpVersion>
+    <MsCACSharpVersion>5.3.0</MsCACSharpVersion>
     <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
     <EnforceExtendedAnalyzerRules>true</EnforceExtendedAnalyzerRules>
   </PropertyGroup>
diff --git a/Refit.Benchmarks/Refit.Benchmarks.csproj b/Refit.Benchmarks/Refit.Benchmarks.csproj
index 884a15d19..1881363bb 100644
--- a/Refit.Benchmarks/Refit.Benchmarks.csproj
+++ b/Refit.Benchmarks/Refit.Benchmarks.csproj
@@ -22,7 +22,7 @@
       <PackageReference Include="System.Text.RegularExpressions" Version="4.3.1" />
       <PackageReference Include="AutoFixture" Version="4.18.1" />
       <PackageReference Include="BenchmarkDotNet" Version="0.14.0" />
-      <PackageReference Include="Microsoft.CodeAnalysis.CSharp.Workspaces" Version="4.12.0-3.24523.4" />
+      <PackageReference Include="Microsoft.CodeAnalysis.CSharp.Workspaces" Version="4.14.0" />
     </ItemGroup>
 
     <ItemGroup>
diff --git a/Refit.GeneratorTests/Refit.GeneratorTests.csproj b/Refit.GeneratorTests/Refit.GeneratorTests.csproj
index 9464d6af6..964601b26 100644
--- a/Refit.GeneratorTests/Refit.GeneratorTests.csproj
+++ b/Refit.GeneratorTests/Refit.GeneratorTests.csproj
@@ -30,7 +30,7 @@
     <PackageReference Include="Verify.SourceGenerators" Version="2.5.0" />
     <PackageReference Include="Verify.Xunit" Version="31.12.5" />
     <PackageReference Include="System.Reactive" Version="6.1.0" />
-    <PackageReference Include="Microsoft.CodeAnalysis.CSharp.Workspaces" Version="4.11.0" />
+    <PackageReference Include="Microsoft.CodeAnalysis.CSharp.Workspaces" Version="4.14.0" />
     <PackageReference Include="Microsoft.CodeAnalysis.CSharp.SourceGenerators.Testing" Version="1.1.3" />
     <ProjectReference Include="..\Refit.Newtonsoft.Json\Refit.Newtonsoft.Json.csproj" />
     <ProjectReference Include="..\Refit.Xml\Refit.Xml.csproj" />
diff --git a/Refit.HttpClientFactory/Refit.HttpClientFactory.csproj b/Refit.HttpClientFactory/Refit.HttpClientFactory.csproj
index 4920d7e0d..13ee4817b 100644
--- a/Refit.HttpClientFactory/Refit.HttpClientFactory.csproj
+++ b/Refit.HttpClientFactory/Refit.HttpClientFactory.csproj
@@ -10,7 +10,7 @@
 
   <ItemGroup>
     <ProjectReference Include="..\Refit\Refit.csproj" PrivateAssets="Analyzers" />
-    <PackageReference Include="Microsoft.Extensions.Http" Version="9.0.3" />
+    <PackageReference Include="Microsoft.Extensions.Http" Version="9.0.14" />
   </ItemGroup>
 
   <ItemGroup>
diff --git a/Refit.Tests/Refit.Tests.csproj b/Refit.Tests/Refit.Tests.csproj
index 105c4dd38..a496fc8e7 100644
--- a/Refit.Tests/Refit.Tests.csproj
+++ b/Refit.Tests/Refit.Tests.csproj
@@ -32,18 +32,18 @@
   </ItemGroup>
 
   <ItemGroup Condition="$(TargetFramework.StartsWith('net4'))">
-    <PackageReference Include="Microsoft.AspNetCore.WebUtilities" Version="2.3.0" />
+    <PackageReference Include="Microsoft.AspNetCore.WebUtilities" Version="2.3.9" />
   </ItemGroup>
 
   <ItemGroup>
     <PackageReference Include="coverlet.msbuild" Version="8.0.1" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.3.0" />
     <PackageReference Include="Moq" Version="4.20.72" />
-    <PackageReference Include="System.Formats.Asn1" Version="9.0.3" />
+    <PackageReference Include="System.Formats.Asn1" Version="9.0.14" />
     <PackageReference Include="xunit" Version="2.9.3" />
     <PackageReference Include="xunit.runner.visualstudio" Version="3.1.5" />
     <PackageReference Include="System.Reactive" Version="6.1.0" />
-    <PackageReference Include="Microsoft.CodeAnalysis.CSharp.Workspaces" Version="4.11.0" />
+    <PackageReference Include="Microsoft.CodeAnalysis.CSharp.Workspaces" Version="4.14.0" />
     <PackageReference Include="Microsoft.CodeAnalysis.CSharp.SourceGenerators.Testing" Version="1.1.3" />
     <PackageReference Include="RichardSzalay.MockHttp" Version="$(MockHttpVersion)" />
     <PackageReference Include="Verify.DiffPlex" Version="3.1.2" />
diff --git a/Refit/Refit.csproj b/Refit/Refit.csproj
index 5c40375c7..4a38e1b91 100644
--- a/Refit/Refit.csproj
+++ b/Refit/Refit.csproj
@@ -24,8 +24,8 @@
   </PropertyGroup>
 
   <ItemGroup Condition="'$(TargetFramework)' == 'netstandard2.0' Or '$(TargetFramework)' == 'net462'">
-    <PackageReference Include="System.Text.Json" Version="9.0.9" />
-    <PackageReference Include="System.Net.Http.Json" Version="9.0.9" />
+    <PackageReference Include="System.Text.Json" Version="9.0.14" />
+    <PackageReference Include="System.Net.Http.Json" Version="9.0.14" />
   </ItemGroup>
 
   <ItemGroup Condition="'$(TargetFramework)' == 'net462'">