diff --git a/hash/buzhash.hpp b/hash/buzhash.hpp
index cd991b6e..11b48ab6 100644
--- a/hash/buzhash.hpp
+++ b/hash/buzhash.hpp
@@ -36,6 +36,8 @@ namespace cruft::hash {
     public:
         static_assert (sizeof (StateT) >= sizeof (WordT));
 
+        using digest_type = StateT;
+
         template <typename ...Args>
         buzhash (
             std::size_t _width,