diff --git a/test/conf/cassandra.yaml b/test/conf/cassandra.yaml
index 26d0ee56a3..43995e6e75 100644
--- a/test/conf/cassandra.yaml
+++ b/test/conf/cassandra.yaml
@@ -33,4 +33,5 @@ server_encryption_options:
     truststore: conf/.truststore
     truststore_password: cassandra
 incremental_backups: true
+concurrent_compactors: 4
 compaction_throughput_mb_per_sec: 0