diff --git a/google/cloud/datastream/v1alpha1/datastream_resources.proto b/google/cloud/datastream/v1alpha1/datastream_resources.proto
index ef694638d1ced..8b8ef5f3e5f4d 100644
--- a/google/cloud/datastream/v1alpha1/datastream_resources.proto
+++ b/google/cloud/datastream/v1alpha1/datastream_resources.proto
@@ -26,6 +26,9 @@ option go_package = "google.golang.org/genproto/googleapis/cloud/datastream/v1al
 option java_multiple_files = true;
 option java_outer_classname = "CloudDatastreamResourcesProto";
 option java_package = "com.google.cloud.datastream.v1alpha1";
+option csharp_namespace = "Google.Cloud.Datastream.V1Alpha1";
+option php_namespace = "Google\\Cloud\\Datastream\\V1alpha1";
+option ruby_package = "Google::Cloud::Datastream::V1alpha1";
 
 // Oracle database profile.
 message OracleProfile {