diff --git a/refs/ref-cache.h b/refs/ref-cache.h
index eda65e73ed..3bfb89d2b3 100644
--- a/refs/ref-cache.h
+++ b/refs/ref-cache.h
@@ -1,7 +1,10 @@
 #ifndef REFS_REF_CACHE_H
 #define REFS_REF_CACHE_H
 
+#include "cache.h"
+
 struct ref_dir;
+struct ref_store;
 
 /*
  * If this ref_cache is filled lazily, this function is used to load