diff --git a/test/extended/prometheus/prometheus.go b/test/extended/prometheus/prometheus.go
index e14121454d6a..c03e9214f2b2 100644
--- a/test/extended/prometheus/prometheus.go
+++ b/test/extended/prometheus/prometheus.go
@@ -422,7 +422,7 @@ var _ = g.Describe("[sig-instrumentation][Late] Alerts", func() {
 		var averageSeriesLimit int
 		switch {
 		case isManagedServiceCluster:
-			averageSeriesLimit = 800
+			averageSeriesLimit = 850
 		default:
 			averageSeriesLimit = 760
 		}