diff --git a/zmq.hpp b/zmq.hpp
index 0f9bca9..979ac9a 100644
--- a/zmq.hpp
+++ b/zmq.hpp
@@ -147,8 +147,8 @@
 
 /*  Version macros for compile-time API version detection                     */
 #define CPPZMQ_VERSION_MAJOR 4
-#define CPPZMQ_VERSION_MINOR 8
-#define CPPZMQ_VERSION_PATCH 1
+#define CPPZMQ_VERSION_MINOR 9
+#define CPPZMQ_VERSION_PATCH 0
 
 #define CPPZMQ_VERSION                                                              \
     ZMQ_MAKE_VERSION(CPPZMQ_VERSION_MAJOR, CPPZMQ_VERSION_MINOR,                    \