diff --git a/DepotDownloader.sln b/DepotDownloader.sln
index c37f33f3..6a944ab2 100644
--- a/DepotDownloader.sln
+++ b/DepotDownloader.sln
@@ -5,6 +5,8 @@ Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "DepotDownloader", "DepotDow
 EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "SteamKit2", "..\..\SteamKit2\SteamKit2\SteamKit2.csproj", "{BEB5BF07-BB56-402A-97A3-A41C6444C6A5}"
 EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "protobuf-net", "..\..\Resources\protobuf-net\protobuf-net\protobuf-net.csproj", "{8374E4D7-2A91-48F1-9360-09B09CF27C3F}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -19,6 +21,10 @@ Global
 		{BEB5BF07-BB56-402A-97A3-A41C6444C6A5}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{BEB5BF07-BB56-402A-97A3-A41C6444C6A5}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{BEB5BF07-BB56-402A-97A3-A41C6444C6A5}.Release|Any CPU.Build.0 = Release|Any CPU
+		{8374E4D7-2A91-48F1-9360-09B09CF27C3F}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{8374E4D7-2A91-48F1-9360-09B09CF27C3F}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{8374E4D7-2A91-48F1-9360-09B09CF27C3F}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{8374E4D7-2A91-48F1-9360-09B09CF27C3F}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE