diff --git a/examples/ProtoContracts/ProtoContracts.csproj b/examples/ProtoContracts/ProtoContracts.csproj
index 9d9f0f4..01c20be 100644
--- a/examples/ProtoContracts/ProtoContracts.csproj
+++ b/examples/ProtoContracts/ProtoContracts.csproj
@@ -5,7 +5,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Google.Protobuf" Version="3.11.2" />
+    <PackageReference Include="Google.Protobuf" Version="3.15.0" />
     <PackageReference Include="Grpc.Core.Api" Version="2.26.0" />
     <PackageReference Include="Grpc.Tools" Version="2.26.0">
       <PrivateAssets>all</PrivateAssets>