diff --git a/lib/constants.py b/lib/constants.py
index 6b00e6b6935087af29dca4354a21c52ad34514cb..d42f5cb6b7e8a4568805e001e1b3884c86aefe93 100644
--- a/lib/constants.py
+++ b/lib/constants.py
@@ -28,6 +28,7 @@ PROTOCOL_VERSION = 13
 RELEASE_VERSION = _autoconf.PACKAGE_VERSION
 OS_API_VERSION = 5
 EXPORT_VERSION = 0
+RAPI_VERSION = 1
 
 
 # Format for CONFIG_VERSION: