diff --git a/JsonSubTypes.Text.Json.Aot.Generator.Tests/JsonSubTypes.Text.Json.Aot.Generator.Tests.csproj b/JsonSubTypes.Text.Json.Aot.Generator.Tests/JsonSubTypes.Text.Json.Aot.Generator.Tests.csproj
index 8208ae8..12a8434 100644
--- a/JsonSubTypes.Text.Json.Aot.Generator.Tests/JsonSubTypes.Text.Json.Aot.Generator.Tests.csproj
+++ b/JsonSubTypes.Text.Json.Aot.Generator.Tests/JsonSubTypes.Text.Json.Aot.Generator.Tests.csproj
@@ -24,7 +24,7 @@
     <ProjectReference Include="..\JsonSubTypes.Text.Json.Aot\JsonSubTypes.Text.Json.Aot.csproj" />
     <ProjectReference Include="..\JsonSubTypes.Text.Json\JsonSubTypes.Text.Json.csproj" />
     <ProjectReference Include="..\JsonSubTypes.Text.Json.Aot.Generated\JsonSubTypes.Text.Json.Aot.Generated.csproj" />
-    <PackageReference Include="Microsoft.CodeAnalysis.CSharp" Version="5.6.0" />
+    <PackageReference Include="Microsoft.CodeAnalysis.CSharp" Version="5.9.0" />
   </ItemGroup>
 
 </Project>
diff --git a/JsonSubTypes.Text.Json.Aot/JsonSubTypes.Text.Json.Aot.csproj b/JsonSubTypes.Text.Json.Aot/JsonSubTypes.Text.Json.Aot.csproj
index d322bb3..bae78b0 100644
--- a/JsonSubTypes.Text.Json.Aot/JsonSubTypes.Text.Json.Aot.csproj
+++ b/JsonSubTypes.Text.Json.Aot/JsonSubTypes.Text.Json.Aot.csproj
@@ -29,7 +29,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.CodeAnalysis.CSharp" Version="5.6.0" PrivateAssets="all" />
+    <PackageReference Include="Microsoft.CodeAnalysis.CSharp" Version="5.9.0" PrivateAssets="all" />
     <AdditionalFiles Include="AnalyzerReleases.Shipped.md" />
     <AdditionalFiles Include="AnalyzerReleases.Unshipped.md" />
   </ItemGroup>