diff --git a/include/zenoh-pico/config.h b/include/zenoh-pico/config.h
index 585a48426..76a2d301c 100644
--- a/include/zenoh-pico/config.h
+++ b/include/zenoh-pico/config.h
@@ -264,7 +264,7 @@
  * Do not change this value.
  */
 #ifndef Z_PROTO_VERSION
-#define Z_PROTO_VERSION 0x08
+#define Z_PROTO_VERSION 0x09
 #endif
 
 /**