diff --git a/ServerPrimarySchemas/ServerPrimarySchemas.csproj b/ServerPrimarySchemas/ServerPrimarySchemas.csproj
index 9a6e0caa..2e682139 100644
--- a/ServerPrimarySchemas/ServerPrimarySchemas.csproj
+++ b/ServerPrimarySchemas/ServerPrimarySchemas.csproj
@@ -30,7 +30,7 @@
   </ItemGroup>
   
   <ItemGroup>
-    <PackageReference Include="Google.Protobuf" Version="3.8.0" />
+    <PackageReference Include="Google.Protobuf" Version="3.15.0" />
     <PackageReference Include="Grpc.Auth" Version="1.21.0" />
     <PackageReference Include="Grpc.Core" Version="1.21.0" />
     <PackageReference Include="Grpc.Tools" Version="1.21.0">