diff --git a/DepotDownloader/DepotDownloader.csproj b/DepotDownloader/DepotDownloader.csproj
index 59ce123c..0dabca38 100644
--- a/DepotDownloader/DepotDownloader.csproj
+++ b/DepotDownloader/DepotDownloader.csproj
@@ -58,9 +58,9 @@
     <PlatformTarget>AnyCPU</PlatformTarget>
   </PropertyGroup>
   <ItemGroup>
-    <Reference Include="protobuf-net, Version=2.0.0.640, Culture=neutral, PublicKeyToken=257b51d87d2e4d67, processorArchitecture=MSIL">
-      <SpecificVersion>False</SpecificVersion>
-      <HintPath>..\packages\protobuf-net.2.0.0.640\lib\net40\protobuf-net.dll</HintPath>
+    <Reference Include="protobuf-net, Version=2.0.0.668, Culture=neutral, PublicKeyToken=257b51d87d2e4d67, processorArchitecture=MSIL">
+      <SpecificVersion>True</SpecificVersion>
+      <HintPath>..\packages\protobuf-net.2.0.0.668\lib\net40\protobuf-net.dll</HintPath>
     </Reference>
     <Reference Include="SteamKit2, Version=1.5.0.29553, Culture=neutral, processorArchitecture=MSIL">
       <SpecificVersion>False</SpecificVersion>