diff --git a/python/knot_resolver/manager/manager.py b/python/knot_resolver/manager/manager.py
index df57bd631..68edb915a 100644
--- a/python/knot_resolver/manager/manager.py
+++ b/python/knot_resolver/manager/manager.py
@@ -135,6 +135,7 @@ def config_nodes(config: KresConfig) -> List[Any]:
                 config.monitoring,
                 config.lua,
                 config.rate_limiting,
+                config.defer,
             ]
 
         # register and immediately call a verifier that validates config with 'canary' kresd process