diff --git a/aws/resource_aws_neptune_cluster_instance.go b/aws/resource_aws_neptune_cluster_instance.go
index 867b7869ee4..0bdaa10eda1 100644
--- a/aws/resource_aws_neptune_cluster_instance.go
+++ b/aws/resource_aws_neptune_cluster_instance.go
@@ -490,6 +490,7 @@ var resourceAwsNeptuneClusterInstanceCreateUpdatePendingStates = []string{
 	"starting",
 	"upgrading",
 	"configuring-log-exports",
+	"configuring-enhanced-monitoring",
 }
 
 var resourceAwsNeptuneClusterInstanceDeletePendingStates = []string{