diff --git a/src/hotspot/share/gc/z/zHeap.hpp b/src/hotspot/share/gc/z/zHeap.hpp
index 5ea4b36..7ec02fb 100644
--- a/src/hotspot/share/gc/z/zHeap.hpp
+++ b/src/hotspot/share/gc/z/zHeap.hpp
@@ -133,6 +133,7 @@ public:
   bool is_object_strongly_live(uintptr_t addr) const;
   template <bool finalizable, bool publish> void mark_object(uintptr_t addr);
   void mark_start();
+  void mark_concurrent_roots();
   void mark();
   void mark_flush_and_free(Thread* thread);
   bool mark_end();