diff --git a/lib/constants.py b/lib/constants.py
index 9ffa3d1f22ee9ebc19639e02eec99c8f971a0c2a..de10ce47e0b7dd12cb6598d9713f03ea9a379bc8 100644
--- a/lib/constants.py
+++ b/lib/constants.py
@@ -26,7 +26,7 @@ from ganeti import _autoconf
 # various versions
 PROTOCOL_VERSION = 13
 RELEASE_VERSION = _autoconf.PACKAGE_VERSION
-OS_API_VERSION = 5
+OS_API_VERSION = 10
 EXPORT_VERSION = 0
 RAPI_VERSION = 2