diff --git a/binder_bindings/android/brillo/IUpdateEngine.aidl b/binder_bindings/android/brillo/IUpdateEngine.aidl
index 6a3295a..b1a1b4f 100644
--- a/binder_bindings/android/brillo/IUpdateEngine.aidl
+++ b/binder_bindings/android/brillo/IUpdateEngine.aidl
@@ -28,6 +28,8 @@
   void RebootIfNeeded();
   void SetChannel(in String target_channel, in boolean powewash);
   String GetChannel(in boolean get_current_channel);
+  void SetCohortHint(in String cohort_hint);
+  String GetCohortHint();
   void SetP2PUpdatePermission(in boolean enabled);
   boolean GetP2PUpdatePermission();
   void SetUpdateOverCellularPermission(in boolean enabled);