diff --git a/pom.xml b/pom.xml
index 87a6b49..497bcc0 100644
--- a/pom.xml
+++ b/pom.xml
@@ -98,7 +98,7 @@ under the License.
 
   <properties>
     <mavenVersion>3.5.4</mavenVersion>
-    <cassandraVersion>3.11.16</cassandraVersion>
+    <cassandraVersion>4.0.11</cassandraVersion>
     <slf4jVersion>1.7.36</slf4jVersion>
     <log4jVersion>2.22.1</log4jVersion>
     <commonsLoggingVersion>1.3.0</commonsLoggingVersion>
diff --git a/src/main/resources/cassandra.yaml b/src/main/resources/cassandra.yaml
index 91ff03e..c190d8a 100644
--- a/src/main/resources/cassandra.yaml
+++ b/src/main/resources/cassandra.yaml
@@ -305,7 +305,7 @@ native_transport_port: 9042
 # native_transport_max_threads: 128
 
 # Whether to start the thrift rpc server.
-start_rpc: false
+# start_rpc: true
 
 # The address to bind the Thrift RPC service and native transport
 # server -- clients connect here.
@@ -319,7 +319,7 @@ start_rpc: false
 # client drivers.
 rpc_address: localhost
 # port for Thrift to listen for clients on
-rpc_port: 9160
+# rpc_port: 9160
 
 # enable or disable keepalive on rpc connections
 rpc_keepalive: true
@@ -341,7 +341,7 @@ rpc_keepalive: true
 #
 # Alternatively,  can provide your own RPC server by providing the fully-qualified class name
 # of an o.a.c.t.TServerFactory that can create an instance of it.
-rpc_server_type: sync
+# rpc_server_type: sync
 
 # Uncomment rpc_min|max_thread to set request pool size limits.
 #
@@ -373,7 +373,7 @@ rpc_server_type: sync
 # internode_recv_buff_size_in_bytes:
 
 # Frame size for thrift (maximum message length).
-thrift_framed_transport_size_in_mb: 15
+# thrift_framed_transport_size_in_mb: 15
 
 # Set to true to have Cassandra create a hard link to each sstable
 # flushed or streamed locally in a backups/ subdirectory of the
@@ -546,7 +546,7 @@ dynamic_snitch_badness_threshold: 0.1
 # client requests to a node with a separate queue for each
 # request_scheduler_id. The scheduler is further customized by
 # request_scheduler_options as described below.
-request_scheduler: org.apache.cassandra.scheduler.NoScheduler
+# request_scheduler: org.apache.cassandra.scheduler.NoScheduler
 
 # Scheduler Options vary based on the type of scheduler
 # NoScheduler - Has no options