diff --git a/src/htsp_server.c b/src/htsp_server.c
index 05f958d8..f6547691 100644
--- a/src/htsp_server.c
+++ b/src/htsp_server.c
@@ -71,7 +71,7 @@
 
 static void *htsp_server, *htsp_server_2;
 
-#define HTSP_PROTO_VERSION 12
+#define HTSP_PROTO_VERSION 13
 
 #define HTSP_ASYNC_OFF  0x00
 #define HTSP_ASYNC_ON   0x01