diff --git a/pkg/model/application.proto b/pkg/model/application.proto
index ed06f75adc..4175ca418d 100644
--- a/pkg/model/application.proto
+++ b/pkg/model/application.proto
@@ -48,6 +48,8 @@ message Application {
 
     // Current sync state.
     ApplicationSyncState sync_state = 13;
+    // Whether the application is deploying or not.
+    bool deploying = 14;
 
     // Unix time when the application was deleted.
     int64 deleted_at = 98 [(validate.rules).int64.gte = 0];