diff --git a/.devcontainer/devcontainer.json b/.devcontainer/devcontainer.json
index d8de34ffb..211136b3b 100644
--- a/.devcontainer/devcontainer.json
+++ b/.devcontainer/devcontainer.json
@@ -27,7 +27,7 @@
       "version": "latest"
     },
     "ghcr.io/devcontainers/features/dotnet:2": {
-      "version": "9.0.100",
+      "version": "9.0.200",
       "dotnetRuntimeVersions": "8.0.14, 6.0.36"
     },
     "ghcr.io/devcontainers/features/common-utils:2": {
diff --git a/MoreLinq.Test.Aot/MoreLinq.Test.Aot.csproj b/MoreLinq.Test.Aot/MoreLinq.Test.Aot.csproj
index d04cc9709..8a7e4c62e 100644
--- a/MoreLinq.Test.Aot/MoreLinq.Test.Aot.csproj
+++ b/MoreLinq.Test.Aot/MoreLinq.Test.Aot.csproj
@@ -10,12 +10,12 @@
   <ItemGroup>
     <PackageReference Include="MSTest.Engine" Version="1.0.0-alpha.24562.1" />
     <PackageReference Include="MSTest.SourceGeneration" Version="1.0.0-alpha.24562.1" />
-    <PackageReference Include="Microsoft.CodeCoverage.MSBuild" Version="17.13.1" />
-    <PackageReference Include="Microsoft.Testing.Extensions.CodeCoverage" Version="17.13.1" />
-    <PackageReference Include="Microsoft.Testing.Extensions.TrxReport" Version="1.5.0" />
-    <PackageReference Include="Microsoft.Testing.Platform.MSBuild" Version="1.5.0" />
-    <PackageReference Include="MSTest.TestFramework" Version="3.7.0" />
-    <PackageReference Include="MSTest.Analyzers" Version="3.7.0">
+    <PackageReference Include="Microsoft.CodeCoverage.MSBuild" Version="17.14.2" />
+    <PackageReference Include="Microsoft.Testing.Extensions.CodeCoverage" Version="17.14.2" />
+    <PackageReference Include="Microsoft.Testing.Extensions.TrxReport" Version="1.6.2" />
+    <PackageReference Include="Microsoft.Testing.Platform.MSBuild" Version="1.6.2" />
+    <PackageReference Include="MSTest.TestFramework" Version="3.8.2" />
+    <PackageReference Include="MSTest.Analyzers" Version="3.8.2">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>
diff --git a/MoreLinq.Test/MoreLinq.Test.csproj b/MoreLinq.Test/MoreLinq.Test.csproj
index 559c0aa51..3224b4bc5 100644
--- a/MoreLinq.Test/MoreLinq.Test.csproj
+++ b/MoreLinq.Test/MoreLinq.Test.csproj
@@ -39,7 +39,7 @@
     <PackageReference Include="System.Reactive" Version="6.0.1" />
     <PackageReference Include="System.ValueTuple" Version="4.5.0" />
     <PackageReference Include="NUnit3TestAdapter" Version="4.6.0" />
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.12.0" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.13.0" />
   </ItemGroup>
 
   <ItemGroup Condition="'$(TargetFramework)' != 'net471'">
@@ -48,7 +48,7 @@
   </ItemGroup>
 
   <ItemGroup Condition="'$(TargetFramework)' == 'net471'">
-    <PackageReference Include="System.Collections.Immutable" Version="9.0.0" />
+    <PackageReference Include="System.Collections.Immutable" Version="9.0.3" />
     <Compile Remove="Async\*.cs" />
   </ItemGroup>
 
diff --git a/bld/ExtensionsGenerator/MoreLinq.ExtensionsGenerator.csproj b/bld/ExtensionsGenerator/MoreLinq.ExtensionsGenerator.csproj
index ad0c81d31..431401d46 100644
--- a/bld/ExtensionsGenerator/MoreLinq.ExtensionsGenerator.csproj
+++ b/bld/ExtensionsGenerator/MoreLinq.ExtensionsGenerator.csproj
@@ -8,6 +8,6 @@
   <ItemGroup>
     <PackageReference Include="docopt.net" Version="0.8.1" />
     <PackageReference Include="Microsoft.CodeAnalysis.CSharp" Version="4.12.0" />
-    <PackageReference Include="System.Collections.Immutable" Version="9.0.0" />
+    <PackageReference Include="System.Collections.Immutable" Version="9.0.3" />
   </ItemGroup>
 </Project>
diff --git a/global.json b/global.json
index 72f400ebe..5335649e7 100644
--- a/global.json
+++ b/global.json
@@ -1,6 +1,6 @@
 {
   "sdk": {
-    "version": "9.0.100",
+    "version": "9.0.200",
     "rollForward": "latestPatch"
   }
 }