diff --git a/include/svs/concurrent/graph.h b/include/svs/concurrent/graph.h
index da28a457a..e19d311a1 100644
--- a/include/svs/concurrent/graph.h
+++ b/include/svs/concurrent/graph.h
@@ -687,6 +687,7 @@ class SimpleGraph : public SimpleGraphBase<Idx, data::SimpleData<Idx, Dynamic, A
   public:
     using parent_type = SimpleGraphBase<Idx, data::SimpleData<Idx, Dynamic, Alloc>>;
     using data_type = typename parent_type::data_type;
+    using allocator_type = Alloc;
     using parent_type::get_data;
 
     ///