diff --git a/dapi-client-csharp/dapi-client-csharp.csproj b/dapi-client-csharp/dapi-client-csharp.csproj
index a14f741..b40103d 100644
--- a/dapi-client-csharp/dapi-client-csharp.csproj
+++ b/dapi-client-csharp/dapi-client-csharp.csproj
@@ -13,7 +13,7 @@
     <PackageLicenseExpression>MIT</PackageLicenseExpression>
   </PropertyGroup>
   <ItemGroup>
-    <PackageReference Include="Google.Protobuf" Version="3.12.1" />
+    <PackageReference Include="Google.Protobuf" Version="3.15.0" />
     <PackageReference Include="Grpc.Core" Version="2.28.1" />
     <PackageReference Include="Grpc.Net.Client" Version="2.28.0" />
     <PackageReference Include="Grpc.Tools" Version="2.29.0">