diff --git a/source/Trek-12/Trek-12.sln b/source/Trek-12/Trek-12.sln
index 23e752e..fda4705 100644
--- a/source/Trek-12/Trek-12.sln
+++ b/source/Trek-12/Trek-12.sln
@@ -11,6 +11,8 @@ Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "ConsoleApp", "ConsoleApp\Co
 EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Tests", "Tests\Tests.csproj", "{383C4215-C680-4C2E-BC7E-B62F0B164370}"
 EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "DataContractPersistence", "DataContractPersistence\DataContractPersistence.csproj", "{FC6A23C3-A1E3-4BF4-85B0-404D8574E190}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -35,6 +37,10 @@ Global
 		{383C4215-C680-4C2E-BC7E-B62F0B164370}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{383C4215-C680-4C2E-BC7E-B62F0B164370}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{383C4215-C680-4C2E-BC7E-B62F0B164370}.Release|Any CPU.Build.0 = Release|Any CPU
+		{FC6A23C3-A1E3-4BF4-85B0-404D8574E190}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{FC6A23C3-A1E3-4BF4-85B0-404D8574E190}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{FC6A23C3-A1E3-4BF4-85B0-404D8574E190}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{FC6A23C3-A1E3-4BF4-85B0-404D8574E190}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE