diff --git a/interop/pubspec.yaml b/interop/pubspec.yaml
index b5869b7..f4038fa 100644
--- a/interop/pubspec.yaml
+++ b/interop/pubspec.yaml
@@ -11,7 +11,7 @@ dependencies:
   collection: ^1.14.11
   grpc:
     path: ../
-  protobuf: ^2.0.0
+  protobuf: ^3.0.0
 
 dev_dependencies:
   test: ^1.16.0