diff --git a/test/extended/prometheus/prometheus.go b/test/extended/prometheus/prometheus.go
index 07dca83c3f17..de3bc4510355 100644
--- a/test/extended/prometheus/prometheus.go
+++ b/test/extended/prometheus/prometheus.go
@@ -420,7 +420,7 @@ var _ = g.Describe("[sig-instrumentation][Late] Alerts", func() {
 		var averageSeriesLimit int
 		switch {
 		case isManagedServiceCluster:
-			averageSeriesLimit = 800
+			averageSeriesLimit = 850
 		default:
 			averageSeriesLimit = 760
 		}