diff --git a/testing/benchmark/system-profiles/15gb_v0.tfvars b/testing/benchmark/system-profiles/15gb_v0.tfvars
index f80d7941b7..8d7f7ccbf8 100644
--- a/testing/benchmark/system-profiles/15gb_v0.tfvars
+++ b/testing/benchmark/system-profiles/15gb_v0.tfvars
@@ -15,8 +15,9 @@ apm_server_size = "15g"
 apm_server_zone_count = 1
 apm_shards = 4
 
-elasticsearch_size = "150g"
+elasticsearch_size = "180g"
 elasticsearch_zone_count = 2
+elasticsearch_dedicated_masters = true
 
 # Standalone