diff --git a/eng/test-rebuild.ps1 b/eng/test-rebuild.ps1
index 1f7ca77abbb06..531478c732a2b 100644
--- a/eng/test-rebuild.ps1
+++ b/eng/test-rebuild.ps1
@@ -54,6 +54,7 @@ try {
 # Rebuilds with missing references
 # Rebuilds with other issues
   " --exclude net472\Microsoft.CodeAnalysis.EditorFeatures2.UnitTests.dll" +
+  " --exclude net6.0\Microsoft.CodeAnalysis.Collections.Package.dll" +
   " --exclude netcoreapp3.1\Microsoft.CodeAnalysis.Collections.Package.dll" +
   " --exclude netstandard2.0\Microsoft.CodeAnalysis.Collections.Package.dll" +
   " --exclude net45\Microsoft.CodeAnalysis.Debugging.Package.dll" +
diff --git a/src/Dependencies/Collections/Microsoft.CodeAnalysis.Collections.Package.csproj b/src/Dependencies/Collections/Microsoft.CodeAnalysis.Collections.Package.csproj
index 22cab2f5f0367..d183bbae6a578 100644
--- a/src/Dependencies/Collections/Microsoft.CodeAnalysis.Collections.Package.csproj
+++ b/src/Dependencies/Collections/Microsoft.CodeAnalysis.Collections.Package.csproj
@@ -2,7 +2,7 @@
 <!-- Licensed to the .NET Foundation under one or more agreements. The .NET Foundation licenses this file to you under the MIT license. See the LICENSE file in the project root for more information. -->
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
-    <TargetFrameworks>netcoreapp3.1;netstandard2.0</TargetFrameworks>
+    <TargetFrameworks>net6.0;netcoreapp3.1;netstandard2.0</TargetFrameworks>
     <GenerateDocumentationFile>false</GenerateDocumentationFile>
     <DebugType>none</DebugType>
     <GenerateDependencyFile>false</GenerateDependencyFile>