diff --git a/pkg/infra/metrics/metrics.go b/pkg/infra/metrics/metrics.go
index 3a092fe9367..4ae2d837cff 100644
--- a/pkg/infra/metrics/metrics.go
+++ b/pkg/infra/metrics/metrics.go
@@ -707,6 +707,7 @@ func initMetricVars() {
 		grafanaPluginBuildInfoDesc,
 		StatsTotalDashboardVersions,
 		StatsTotalAnnotations,
+		StatsTotalAlertRules,
 		MAccessEvaluationCount,
 		StatsTotalLibraryPanels,
 		StatsTotalLibraryVariables,