diff --git a/packages/grafana-data/src/types/featureToggles.gen.ts b/packages/grafana-data/src/types/featureToggles.gen.ts
index 20e089f1f90..ce299aebc26 100644
--- a/packages/grafana-data/src/types/featureToggles.gen.ts
+++ b/packages/grafana-data/src/types/featureToggles.gen.ts
@@ -171,4 +171,5 @@ export interface FeatureToggles {
   displayAnonymousStats?: boolean;
   alertStateHistoryAnnotationsFromLoki?: boolean;
   lokiQueryHints?: boolean;
+  alertingPreviewUpgrade?: boolean;
 }
diff --git a/pkg/services/featuremgmt/registry.go b/pkg/services/featuremgmt/registry.go
index e498635d853..0fbaaaa9ef5 100644
--- a/pkg/services/featuremgmt/registry.go
+++ b/pkg/services/featuremgmt/registry.go
@@ -1293,5 +1293,15 @@ var (
 			AllowSelfServe: false,
 			Created:        time.Date(2023, time.December, 18, 12, 0, 0, 0, time.UTC),
 		},
+		{
+			Name:            "alertingPreviewUpgrade",
+			Description:     "Show Unified Alerting preview and upgrade page in legacy alerting",
+			FrontendOnly:    false,
+			Stage:           FeatureStageExperimental,
+			Owner:           grafanaAlertingSquad,
+			HideFromDocs:    true,
+			RequiresRestart: true,
+			Created:         time.Date(2024, time.January, 3, 12, 0, 0, 0, time.UTC),
+		},
 	}
 )
diff --git a/pkg/services/featuremgmt/toggles_gen.csv b/pkg/services/featuremgmt/toggles_gen.csv
index 0c83d864d08..3c7f4f05b30 100644
--- a/pkg/services/featuremgmt/toggles_gen.csv
+++ b/pkg/services/featuremgmt/toggles_gen.csv
@@ -152,3 +152,4 @@ regressionTransformation,privatePreview,@grafana/grafana-bi-squad,2023-11-24,fal
 displayAnonymousStats,GA,@grafana/identity-access-team,2023-11-29,false,false,false,true
 alertStateHistoryAnnotationsFromLoki,experimental,@grafana/alerting-squad,2023-11-30,false,false,true,false
 lokiQueryHints,GA,@grafana/observability-logs,2023-12-18,false,false,false,true
+alertingPreviewUpgrade,experimental,@grafana/alerting-squad,2024-01-03,false,false,true,false
diff --git a/pkg/services/featuremgmt/toggles_gen.go b/pkg/services/featuremgmt/toggles_gen.go
index c40afd54e5e..d2f4a55b859 100644
--- a/pkg/services/featuremgmt/toggles_gen.go
+++ b/pkg/services/featuremgmt/toggles_gen.go
@@ -618,4 +618,8 @@ const (
 	// FlagLokiQueryHints
 	// Enables query hints for Loki
 	FlagLokiQueryHints = "lokiQueryHints"
+
+	// FlagAlertingPreviewUpgrade
+	// Show Unified Alerting preview and upgrade page in legacy alerting
+	FlagAlertingPreviewUpgrade = "alertingPreviewUpgrade"
 )