diff --git a/Directory.Packages.props b/Directory.Packages.props
index f1a289a..03bdcb9 100644
--- a/Directory.Packages.props
+++ b/Directory.Packages.props
@@ -6,9 +6,9 @@
   <ItemGroup>
     <GlobalPackageReference Include="CSharpier.MSBuild" Version="1.3.0" />
     <GlobalPackageReference Include="Microsoft.CodeAnalysis.BannedApiAnalyzers" Version="5.6.0" />
-    <GlobalPackageReference Include="Microsoft.CodeAnalysis.NetAnalyzers" Version="10.0.403" />
+    <GlobalPackageReference Include="Microsoft.CodeAnalysis.NetAnalyzers" Version="10.0.404" />
     <GlobalPackageReference Include="Meziantou.Analyzer" Version="3.0.322" />
-    <GlobalPackageReference Include="Microsoft.SourceLink.GitHub" Version="10.0.403" />
+    <GlobalPackageReference Include="Microsoft.SourceLink.GitHub" Version="10.0.404" />
     <GlobalPackageReference Include="Microsoft.VisualStudio.Threading.Analyzers" Version="18.12.1" />
     <GlobalPackageReference Include="NetEvolve.Defaults" Version="2.10.80" />
     <GlobalPackageReference Include="Roslynator.Analyzers" Version="5.0.1" />
@@ -37,9 +37,9 @@
       PackageReference - legal without extra setup because CentralPackageVersionOverrideEnabled is not
       disabled anywhere in this repository.
     -->
-    <PackageVersion Include="Microsoft.CodeAnalysis.Analyzers" Version="5.9.0" />
-    <PackageVersion Include="Microsoft.CodeAnalysis.CSharp" Version="5.9.0" />
-    <PackageVersion Include="Microsoft.CodeAnalysis.CSharp.Workspaces" Version="5.9.0" />
+    <PackageVersion Include="Microsoft.CodeAnalysis.Analyzers" Version="5.12.0" />
+    <PackageVersion Include="Microsoft.CodeAnalysis.CSharp" Version="5.12.0" />
+    <PackageVersion Include="Microsoft.CodeAnalysis.CSharp.Workspaces" Version="5.12.0" />
     <!--
       Each Roslyn tier's own Microsoft.CodeAnalysis.Common brings a different minimum
       System.Collections.Immutable (4.8.0 -> 7.0.0, 4.14.0 -> 9.0.0, 5.6.0 -> 10.0.1). The Roslyn4_8
@@ -50,7 +50,7 @@
       CentralPackageTransitivePinningEnabled promotes this central version everywhere, including
       projects that never reference the package directly.
     -->
-    <PackageVersion Include="System.Collections.Immutable" Version="10.0.12" />
+    <PackageVersion Include="System.Collections.Immutable" Version="10.0.15" />
   </ItemGroup>
   <ItemGroup Label="Testing">
     <PackageVersion Include="Microsoft.Testing.Extensions.CodeCoverage" Version="18.12.0" />
diff --git a/src/NetEvolve.FrameShift/NetEvolve.FrameShift.Roslyn4_14.csproj b/src/NetEvolve.FrameShift/NetEvolve.FrameShift.Roslyn4_14.csproj
index d96eb6d..dbe3328 100644
--- a/src/NetEvolve.FrameShift/NetEvolve.FrameShift.Roslyn4_14.csproj
+++ b/src/NetEvolve.FrameShift/NetEvolve.FrameShift.Roslyn4_14.csproj
@@ -31,7 +31,7 @@
       forced up to 10.0.1 through this ProjectReference collides with it at compile time (MSB3277).
       Pinned back down to what this tier actually needs instead of inheriting the 5.6.0 tier's ceiling.
     -->
-    <PackageReference Include="System.Collections.Immutable" PrivateAssets="all" VersionOverride="9.0.22" />
+    <PackageReference Include="System.Collections.Immutable" PrivateAssets="all" VersionOverride="9.0.23" />
   </ItemGroup>
 
   <Import Project="Sdk.targets" Sdk="Microsoft.NET.Sdk" />
diff --git a/src/NetEvolve.FrameShift/NetEvolve.FrameShift.Roslyn4_8.csproj b/src/NetEvolve.FrameShift/NetEvolve.FrameShift.Roslyn4_8.csproj
index 232a6ac..c0b61bd 100644
--- a/src/NetEvolve.FrameShift/NetEvolve.FrameShift.Roslyn4_8.csproj
+++ b/src/NetEvolve.FrameShift/NetEvolve.FrameShift.Roslyn4_8.csproj
@@ -47,7 +47,7 @@
       variant's own need) - because a net6.0/net7.0 test project referencing this variant would otherwise
       inherit a version its own reference assemblies don't agree with.
     -->
-    <PackageReference Include="System.Collections.Immutable" PrivateAssets="all" VersionOverride="10.0.12" />
+    <PackageReference Include="System.Collections.Immutable" PrivateAssets="all" VersionOverride="10.0.15" />
   </ItemGroup>
 
   <Import Project="Sdk.targets" Sdk="Microsoft.NET.Sdk" />