diff --git a/CultLib.sln b/CultLib.sln
index 2b50a153..c60890ca 100644
--- a/CultLib.sln
+++ b/CultLib.sln
@@ -51,6 +51,8 @@ Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "CultMath", "packages\cultma
 EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "CultMath.Tests", "packages\cultmath\tests\CultMath.Tests\CultMath.Tests.csproj", "{FEF9DA88-2177-4FD0-885D-7096ACFA8A9D}"
 EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "GameCult.Caching.ConsumerBuild", "tests\GameCult.Caching.ConsumerBuild\GameCult.Caching.ConsumerBuild.csproj", "{D3138F3C-9531-4906-A5D3-74BD857D0685}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -289,6 +291,18 @@ Global
 		{FEF9DA88-2177-4FD0-885D-7096ACFA8A9D}.Release|x64.Build.0 = Release|Any CPU
 		{FEF9DA88-2177-4FD0-885D-7096ACFA8A9D}.Release|x86.ActiveCfg = Release|Any CPU
 		{FEF9DA88-2177-4FD0-885D-7096ACFA8A9D}.Release|x86.Build.0 = Release|Any CPU
+		{D3138F3C-9531-4906-A5D3-74BD857D0685}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{D3138F3C-9531-4906-A5D3-74BD857D0685}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{D3138F3C-9531-4906-A5D3-74BD857D0685}.Debug|x64.ActiveCfg = Debug|Any CPU
+		{D3138F3C-9531-4906-A5D3-74BD857D0685}.Debug|x64.Build.0 = Debug|Any CPU
+		{D3138F3C-9531-4906-A5D3-74BD857D0685}.Debug|x86.ActiveCfg = Debug|Any CPU
+		{D3138F3C-9531-4906-A5D3-74BD857D0685}.Debug|x86.Build.0 = Debug|Any CPU
+		{D3138F3C-9531-4906-A5D3-74BD857D0685}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{D3138F3C-9531-4906-A5D3-74BD857D0685}.Release|Any CPU.Build.0 = Release|Any CPU
+		{D3138F3C-9531-4906-A5D3-74BD857D0685}.Release|x64.ActiveCfg = Release|Any CPU
+		{D3138F3C-9531-4906-A5D3-74BD857D0685}.Release|x64.Build.0 = Release|Any CPU
+		{D3138F3C-9531-4906-A5D3-74BD857D0685}.Release|x86.ActiveCfg = Release|Any CPU
+		{D3138F3C-9531-4906-A5D3-74BD857D0685}.Release|x86.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE
@@ -314,5 +328,6 @@ Global
 		{B48EAE30-152F-01E3-6E31-82B350494D3C} = {809F86A1-1C4C-B159-0CD4-DF9D33D876CE}
 		{54D543F7-8EB7-4A11-977E-22D3EE2D8C3F} = {B48EAE30-152F-01E3-6E31-82B350494D3C}
 		{FEF9DA88-2177-4FD0-885D-7096ACFA8A9D} = {B48EAE30-152F-01E3-6E31-82B350494D3C}
+		{D3138F3C-9531-4906-A5D3-74BD857D0685} = {39D316AB-ABB5-49A2-8E83-CAF4C75B48F4}
 	EndGlobalSection
 EndGlobal
diff --git a/src/GameCult.Caching.MessagePack/GameCult.Caching.MessagePack.csproj b/src/GameCult.Caching.MessagePack/GameCult.Caching.MessagePack.csproj
index 24e7a48e..b089c776 100644
--- a/src/GameCult.Caching.MessagePack/GameCult.Caching.MessagePack.csproj
+++ b/src/GameCult.Caching.MessagePack/GameCult.Caching.MessagePack.csproj
@@ -10,5 +10,6 @@
     <ProjectReference Include="..\GameCult.Caching.MessagePack.Analyzers\GameCult.Caching.MessagePack.Analyzers.csproj"
                       PrivateAssets="none" />
     <PackageReference Include="MessagePack" Version="3.1.7" />
+    <PackageReference Include="MessagePackAnalyzer" Version="3.1.7" PrivateAssets="all" />
   </ItemGroup>
 </Project>
diff --git a/src/GameCult.Networking/GameCult.Networking.csproj b/src/GameCult.Networking/GameCult.Networking.csproj
index f275484f..951cc1cc 100644
--- a/src/GameCult.Networking/GameCult.Networking.csproj
+++ b/src/GameCult.Networking/GameCult.Networking.csproj
@@ -11,6 +11,7 @@
                       OutputItemType="Analyzer"
                       ReferenceOutputAssembly="false" />
     <PackageReference Include="MessagePack" Version="3.1.7" />
+    <PackageReference Include="MessagePackAnalyzer" Version="3.1.7" PrivateAssets="all" />
     <PackageReference Include="System.Text.Json" Version="9.0.10" />
     <PackageReference Include="R3" Version="1.3.0" />
     <PackageReference Include="LiteNetLib" Version="2.1.2" />
diff --git a/tests/GameCult.Caching.ConsumerBuild/GameCult.Caching.ConsumerBuild.csproj b/tests/GameCult.Caching.ConsumerBuild/GameCult.Caching.ConsumerBuild.csproj
new file mode 100644
index 00000000..a05b8113
--- /dev/null
+++ b/tests/GameCult.Caching.ConsumerBuild/GameCult.Caching.ConsumerBuild.csproj
@@ -0,0 +1,16 @@
+<Project Sdk="Microsoft.NET.Sdk">
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net10.0</TargetFramework>
+    <Nullable>enable</Nullable>
+    <IsPackable>false</IsPackable>
+    <EmitCompilerGeneratedFiles>true</EmitCompilerGeneratedFiles>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\..\src\GameCult.Caching.MessagePack\GameCult.Caching.MessagePack.csproj" />
+    <ProjectReference Include="..\..\src\GameCult.Caching.MessagePack.Generator\GameCult.Caching.MessagePack.Generator.csproj"
+                      OutputItemType="Analyzer"
+                      ReferenceOutputAssembly="false" />
+  </ItemGroup>
+</Project>
diff --git a/tests/GameCult.Caching.ConsumerBuild/Program.cs b/tests/GameCult.Caching.ConsumerBuild/Program.cs
new file mode 100644
index 00000000..b0f15973
--- /dev/null
+++ b/tests/GameCult.Caching.ConsumerBuild/Program.cs
@@ -0,0 +1,14 @@
+using System.Collections.Generic;
+using GameCult.Caching;
+using MessagePack;
+
+// RefKeyedDictionaryCompilesInAConsumer: this project building is the test.
+System.Console.WriteLine(new ConsumerFaction().Standing.Count);
+
+[CultDocument("tests.consumer_faction", "tests.consumer_faction.v1")]
+[MessagePackObject]
+public sealed class ConsumerFaction
+{
+    [Key(0)] [CultName] public string Name { get; set; } = string.Empty;
+    [Key(1)] public Dictionary<CultRecordRef<ConsumerFaction>, float> Standing { get; set; } = new();
+}