diff --git a/SteamKit2/SteamKit2/SteamKit2.csproj b/SteamKit2/SteamKit2/SteamKit2.csproj
index 8d58649c1..cc9d69249 100644
--- a/SteamKit2/SteamKit2/SteamKit2.csproj
+++ b/SteamKit2/SteamKit2/SteamKit2.csproj
@@ -54,7 +54,7 @@
   <ItemGroup>
     <PackageReference Include="Microsoft.SourceLink.GitHub" Version="1.0.0" PrivateAssets="All" />
     <PackageReference Include="Microsoft.Win32.Registry" Version="5.0.0" />
-    <PackageReference Include="protobuf-net" Version="3.0.24" />
+    <PackageReference Include="protobuf-net" Version="3.0.73" />
   </ItemGroup>
 
 </Project>