diff --git a/include/bitcoin/node/chasers/chaser.hpp b/include/bitcoin/node/chasers/chaser.hpp
index a30ee7d3..4c3894d0 100644
--- a/include/bitcoin/node/chasers/chaser.hpp
+++ b/include/bitcoin/node/chasers/chaser.hpp
@@ -156,6 +156,9 @@ class BCN_API chaser
 #define SUBSCRIBE_EVENTS(method, ...) \
     subscribe_events(BIND(method, __VA_ARGS__))
 
+#define PARALLEL(method, ...) \
+    boost::asio::post(threadpool_.service(), BIND(method, __VA_ARGS__));
+
 } // namespace node
 } // namespace libbitcoin