diff --git a/lib/constants.py b/lib/constants.py
index c20e65bde0466be4ee844ea013a5df1d022e4e04..827828d5abe1a473fbdf65c83aec63220b11eafd 100644
--- a/lib/constants.py
+++ b/lib/constants.py
@@ -26,7 +26,7 @@ import re
 from ganeti import _autoconf
 
 # various versions
-PROTOCOL_VERSION = 20
+PROTOCOL_VERSION = 30
 RELEASE_VERSION = _autoconf.PACKAGE_VERSION
 OS_API_V10 = 10
 OS_API_V15 = 15