diff --git a/proto/headscale/v1/machine.proto b/proto/headscale/v1/machine.proto
index 27616d09..45778482 100644
--- a/proto/headscale/v1/machine.proto
+++ b/proto/headscale/v1/machine.proto
@@ -44,6 +44,7 @@ message Machine {
     repeated string invalid_tags = 19;
     repeated string valid_tags   = 20;
     string          given_name   = 21;
+    bool            online       = 22;
 }
 
 message RegisterMachineRequest {