diff --git a/cluster.proto b/cluster.proto
index 6c09642..e2d150d 100644
--- a/cluster.proto
+++ b/cluster.proto
@@ -2,16 +2,20 @@ syntax = "proto3";
 package virtpb;
 
 import "google/protobuf/timestamp.proto";
+import "droplet.proto";
+import "hypervisor.proto";
 
 message Cluster {
-        string                      uuid         = 1;  // `autogenpb:unique`
-        string                      name         = 2;
-        repeated string             URL          = 3;
-        google.protobuf.Timestamp   ctime        = 4;  // when the cluster was created
+        string                      uuid            = 1;  // `autogenpb:unique`
+        string                      name            = 2;
+        repeated string             URL             = 3;
+        google.protobuf.Timestamp   ctime           = 4;  // when the cluster was created
+        repeated Droplet            droplets        = 5;
+        repeated Hypervisor         hypervisors     = 6;
 }
 
-message Clusters {                                     // `autogenpb:marshal`
-        string                      uuid         = 1;  // `autogenpb:uuid:57ddd763-75f6-4003-bf0e-8dd0f8a44044`
-        string                      version      = 2;  // `autogenpb:version:v0.0.1`
-        repeated Cluster            clusters     = 3;
+message Clusters {                                        // `autogenpb:marshal`
+        string                      uuid            = 1;  // `autogenpb:uuid:57ddd763-75f6-4003-bf0e-8dd0f8a44044`
+        string                      version         = 2;  // `autogenpb:version:v0.0.1`
+        repeated Cluster            clusters        = 3;
 }