diff --git a/internal/proto/metadata.proto b/internal/proto/metadata.proto
index 91fdbeb9..948b47cd 100644
--- a/internal/proto/metadata.proto
+++ b/internal/proto/metadata.proto
@@ -66,4 +66,8 @@ enum DeviceType {
 
   // The device is a watch.
   DEVICE_TYPE_WATCH = 6;
+
+  // The device is a ChromeOS device. ChromeOS can be a laptop, desktop, or
+  // convertible (tablet + clamshell).
+  DEVICE_TYPE_CHROMEOS = 7;
 }