diff --git a/XmlSchemaClassGenerator.Tests/XmlSchemaClassGenerator.Tests.csproj b/XmlSchemaClassGenerator.Tests/XmlSchemaClassGenerator.Tests.csproj
index 53752a50..8510db1b 100644
--- a/XmlSchemaClassGenerator.Tests/XmlSchemaClassGenerator.Tests.csproj
+++ b/XmlSchemaClassGenerator.Tests/XmlSchemaClassGenerator.Tests.csproj
@@ -32,7 +32,7 @@
     <PackageReference Include="Glob.cs" Version="5.0.224" />
     <PackageReference Include="Microsoft.Net.Compilers.netcore" Version="1.3.2" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.8.0" />
-    <PackageReference Include="System.CodeDom" Version="4.7.0" />
+    <PackageReference Include="System.CodeDom" Version="5.0.0" />
     <PackageReference Include="System.Text.Encoding.CodePages" Version="4.7.1" />
     <PackageReference Include="System.ValueTuple" Version="4.5.0" />
     <PackageReference Include="xunit.runner.visualstudio" Version="2.4.3">
diff --git a/XmlSchemaClassGenerator/XmlSchemaClassGenerator.csproj b/XmlSchemaClassGenerator/XmlSchemaClassGenerator.csproj
index cd79c432..ed32923f 100644
--- a/XmlSchemaClassGenerator/XmlSchemaClassGenerator.csproj
+++ b/XmlSchemaClassGenerator/XmlSchemaClassGenerator.csproj
@@ -44,7 +44,7 @@
   </ItemGroup>
 
   <ItemGroup Condition=" '$(TargetFramework)' == 'netstandard2.0' ">
-    <PackageReference Include="System.CodeDom" Version="4.7.0" />
+    <PackageReference Include="System.CodeDom" Version="5.0.0" />
   </ItemGroup>
 
   <ItemGroup>