diff --git a/include/zmq.h b/include/zmq.h
index 0aeafeb0..a6aa252f 100644
--- a/include/zmq.h
+++ b/include/zmq.h
@@ -72,8 +72,8 @@ typedef unsigned __int16 uint16_t;
 /******************************************************************************/
 
 /*  Version macros for compile-time API version detection                     */
-#define ZMQ_VERSION_MAJOR 3
-#define ZMQ_VERSION_MINOR 3
+#define ZMQ_VERSION_MAJOR 4
+#define ZMQ_VERSION_MINOR 1
 #define ZMQ_VERSION_PATCH 0
 
 #define ZMQ_MAKE_VERSION(major, minor, patch) \