diff --git a/google/cloud/osconfig/v1/osconfig_service.proto b/google/cloud/osconfig/v1/osconfig_service.proto
index 6fada4865..08ca8a485 100644
--- a/google/cloud/osconfig/v1/osconfig_service.proto
+++ b/google/cloud/osconfig/v1/osconfig_service.proto
@@ -18,6 +18,7 @@ package google.cloud.osconfig.v1;
 
 import "google/api/annotations.proto";
 import "google/api/client.proto";
+import "google/api/resource.proto";
 import "google/cloud/osconfig/v1/patch_deployments.proto";
 import "google/cloud/osconfig/v1/patch_jobs.proto";
 import "google/protobuf/empty.proto";
@@ -29,6 +30,11 @@ option java_package = "com.google.cloud.osconfig.v1";
 option php_namespace = "Google\\Cloud\\OsConfig\\V1";
 option ruby_package = "Google::Cloud::OsConfig::V1";
 
+option (google.api.resource_definition) = {
+  type: "compute.googleapis.com/Instance"
+  pattern: "projects/{project}/zones/{zone}/instances/{instance}"
+};
+
 // OS Config API
 //
 // The OS Config service is a server-side component that you can use to