diff --git a/src/Controls/src/SourceGen/Controls.SourceGen.csproj b/src/Controls/src/SourceGen/Controls.SourceGen.csproj
index b4e91b6f0f03..d36290f53ac5 100644
--- a/src/Controls/src/SourceGen/Controls.SourceGen.csproj
+++ b/src/Controls/src/SourceGen/Controls.SourceGen.csproj
@@ -36,7 +36,7 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.CodeAnalysis.CSharp" Version="4.3.0" PrivateAssets="All" />
+    <PackageReference Include="Microsoft.CodeAnalysis.CSharp" Version="4.2.0" PrivateAssets="All" />
   </ItemGroup>
 
   <ItemGroup>
diff --git a/src/TestUtils/src/DeviceTests.Runners.SourceGen/TestUtils.DeviceTests.Runners.SourceGen.csproj b/src/TestUtils/src/DeviceTests.Runners.SourceGen/TestUtils.DeviceTests.Runners.SourceGen.csproj
index 0294da724542..60b755fcad74 100644
--- a/src/TestUtils/src/DeviceTests.Runners.SourceGen/TestUtils.DeviceTests.Runners.SourceGen.csproj
+++ b/src/TestUtils/src/DeviceTests.Runners.SourceGen/TestUtils.DeviceTests.Runners.SourceGen.csproj
@@ -9,7 +9,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.CodeAnalysis.CSharp" Version="4.3.0" PrivateAssets="All" />
+    <PackageReference Include="Microsoft.CodeAnalysis.CSharp" Version="4.2.0" PrivateAssets="All" />
   </ItemGroup>
 
   <ItemGroup>