diff --git a/src/crypto/hash-ops.h b/src/crypto/hash-ops.h
index 9d3abc3f8..6ce4365c8 100644
--- a/src/crypto/hash-ops.h
+++ b/src/crypto/hash-ops.h
@@ -92,7 +92,7 @@ bool tree_branch(const char (*hashes)[HASH_SIZE], size_t count, const char *hash
 bool tree_branch_hash(const char hash[HASH_SIZE], const char (*branch)[HASH_SIZE], size_t depth, uint32_t path, char root[HASH_SIZE]);
 bool is_branch_in_tree(const char hash[HASH_SIZE], const char root[HASH_SIZE], const char (*branch)[HASH_SIZE], size_t depth, uint32_t path);
 
-#define RX_BLOCK_VERSION	12
+#define RX_BLOCK_VERSION	13
 void rx_slow_hash_allocate_state(void);
 void rx_slow_hash_free_state(void);
 uint64_t rx_seedheight(const uint64_t height);