diff --git a/Directory.Packages.props b/Directory.Packages.props
index 248de2a8..5d9a89da 100644
--- a/Directory.Packages.props
+++ b/Directory.Packages.props
@@ -14,7 +14,7 @@
     <PackageVersion Include="DNNE" Version="2.0.8" />
     <PackageVersion Include="Microsoft.Bcl.AsyncInterfaces" Version="9.0.11" />
     <PackageVersion Include="Microsoft.CodeAnalysis" Version="$(CodeAnalysisVersion)" />
-    <PackageVersion Include="Microsoft.CodeAnalysis.Analyzers" Version="3.11.0" />
+    <PackageVersion Include="Microsoft.CodeAnalysis.Analyzers" Version="4.14.0" />
     <PackageVersion Include="Microsoft.CodeAnalysis.Common" Version="$(CodeAnalysisVersion)" />
     <PackageVersion Include="Microsoft.CodeAnalysis.CSharp" Version="$(CodeAnalysisVersion)" />
     <PackageVersion Include="Microsoft.CodeAnalysis.CSharp.CodeFix.Testing" Version="$(CodefixTestingVersion)" />
diff --git a/test/Directory.Packages.props b/test/Directory.Packages.props
index 6875d823..e359b4cd 100644
--- a/test/Directory.Packages.props
+++ b/test/Directory.Packages.props
@@ -3,12 +3,13 @@
   <Import Project="$([MSBuild]::GetPathOfFileAbove($(MSBuildThisFile), $(MSBuildThisFileDirectory)..))" />
 
   <PropertyGroup>
-    <CodeAnalysisVersionForTests>4.13.0</CodeAnalysisVersionForTests>
+    <CodeAnalysisVersionForTests>5.0.0</CodeAnalysisVersionForTests>
   </PropertyGroup>
   <ItemGroup>
     <PackageVersion Update="Microsoft.CodeAnalysis" Version="$(CodeAnalysisVersionForTests)" />
     <PackageVersion Update="Microsoft.CodeAnalysis.Common" Version="$(CodeAnalysisVersionForTests)" />
     <PackageVersion Update="Microsoft.CodeAnalysis.CSharp" Version="$(CodeAnalysisVersionForTests)" />
     <PackageVersion Update="Microsoft.CodeAnalysis.VisualBasic" Version="$(CodeAnalysisVersionForTests)" />
+    <PackageVersion Update="System.Collections.Immutable" Version="9.0.13" />
   </ItemGroup>
 </Project>