diff --git a/pkg/server/feature_flags.go b/pkg/server/feature_flags.go
index 72a30988..b7ec491b 100644
--- a/pkg/server/feature_flags.go
+++ b/pkg/server/feature_flags.go
@@ -23,7 +23,7 @@ import (
 	"gomodules.xyz/sets"
 )
 
-var knownFlags = sets.NewString("DisableAnalytics")
+var knownFlags = sets.NewString("DisableAnalytics", "Constraints")
 
 type FeatureFlags map[string]string