diff --git a/eng/Version.Details.xml b/eng/Version.Details.xml
index 344c7f1df4e0bf..8058e29b061086 100644
--- a/eng/Version.Details.xml
+++ b/eng/Version.Details.xml
@@ -356,17 +356,17 @@
       <Uri>https://github.com/dotnet/runtime-assets</Uri>
       <Sha>6d82d2732e240983f23ebe53d3cfb8fcd3b3ec0d</Sha>
     </Dependency>
-    <Dependency Name="Microsoft.Net.Compilers.Toolset" Version="4.12.0-2.24419.4">
+    <Dependency Name="Microsoft.Net.Compilers.Toolset" Version="4.12.0-2.24421.9">
       <Uri>https://github.com/dotnet/roslyn</Uri>
-      <Sha>63a2cf641e32073c432a505dd899d9e2ea7abbd2</Sha>
+      <Sha>08a167c19e5e04742b0922bdb1ea8046e9364f4b</Sha>
     </Dependency>
-    <Dependency Name="Microsoft.CodeAnalysis" Version="4.12.0-2.24419.4">
+    <Dependency Name="Microsoft.CodeAnalysis" Version="4.12.0-2.24421.9">
       <Uri>https://github.com/dotnet/roslyn</Uri>
-      <Sha>63a2cf641e32073c432a505dd899d9e2ea7abbd2</Sha>
+      <Sha>08a167c19e5e04742b0922bdb1ea8046e9364f4b</Sha>
     </Dependency>
-    <Dependency Name="Microsoft.CodeAnalysis.CSharp" Version="4.12.0-2.24419.4">
+    <Dependency Name="Microsoft.CodeAnalysis.CSharp" Version="4.12.0-2.24421.9">
       <Uri>https://github.com/dotnet/roslyn</Uri>
-      <Sha>63a2cf641e32073c432a505dd899d9e2ea7abbd2</Sha>
+      <Sha>08a167c19e5e04742b0922bdb1ea8046e9364f4b</Sha>
     </Dependency>
     <Dependency Name="Microsoft.CodeAnalysis.Analyzers" Version="3.11.0-beta1.24405.1">
       <Uri>https://github.com/dotnet/roslyn-analyzers</Uri>
@@ -377,9 +377,9 @@
       <Sha>3211f48253bc18560156d90dc5e710d35f7d03fa</Sha>
     </Dependency>
     <!-- Intermediate is necessary for source build. -->
-    <Dependency Name="Microsoft.SourceBuild.Intermediate.roslyn" Version="4.12.0-2.24419.4">
+    <Dependency Name="Microsoft.SourceBuild.Intermediate.roslyn" Version="4.12.0-2.24421.9">
       <Uri>https://github.com/dotnet/roslyn</Uri>
-      <Sha>63a2cf641e32073c432a505dd899d9e2ea7abbd2</Sha>
+      <Sha>08a167c19e5e04742b0922bdb1ea8046e9364f4b</Sha>
       <SourceBuild RepoName="roslyn" ManagedOnly="true" />
     </Dependency>
     <Dependency Name="Microsoft.DotNet.ApiCompat.Task" Version="9.0.100-rc.1.24409.1">
diff --git a/eng/Versions.props b/eng/Versions.props
index 22918db041e7cc..0f4756088e4335 100644
--- a/eng/Versions.props
+++ b/eng/Versions.props
@@ -42,9 +42,9 @@
       Any tools that contribute to the design-time experience should use the MicrosoftCodeAnalysisVersion_LatestVS property above to ensure
       they do not break the local dev experience.
     -->
-    <MicrosoftCodeAnalysisCSharpVersion>4.12.0-2.24419.4</MicrosoftCodeAnalysisCSharpVersion>
-    <MicrosoftCodeAnalysisVersion>4.12.0-2.24419.4</MicrosoftCodeAnalysisVersion>
-    <MicrosoftNetCompilersToolsetVersion>4.12.0-2.24419.4</MicrosoftNetCompilersToolsetVersion>
+    <MicrosoftCodeAnalysisCSharpVersion>4.12.0-2.24421.9</MicrosoftCodeAnalysisCSharpVersion>
+    <MicrosoftCodeAnalysisVersion>4.12.0-2.24421.9</MicrosoftCodeAnalysisVersion>
+    <MicrosoftNetCompilersToolsetVersion>4.12.0-2.24421.9</MicrosoftNetCompilersToolsetVersion>
   </PropertyGroup>
   <!--
     For source generator support we need to target multiple versions of Roslyn in order to be able to run on older versions of Roslyn.