diff --git a/src/ipc.h b/src/ipc.h
index 8ad07bb..6ca0701 100644
--- a/src/ipc.h
+++ b/src/ipc.h
@@ -18,7 +18,7 @@
 #define IPC_HEADER_SIZE  6
 #define IPC_MAX_MESSAGE_SIZE  8000000-IPC_HEADER_SIZE
 
-#define IPC_VERSION 1
+#define IPC_VERSION 2
 
 #if ! defined(IPC_WITHOUT_ERRORS) && ! defined(IPC_WITH_ERRORS)
 #define IPC_WITH_ERRORS                               2