diff --git a/flink-connector-opensearch/pom.xml b/flink-connector-opensearch/pom.xml
index fdc52b2..d4455d9 100644
--- a/flink-connector-opensearch/pom.xml
+++ b/flink-connector-opensearch/pom.xml
@@ -36,7 +36,7 @@ under the License.
 
 	<!-- Allow users to pass custom connector versions -->
 	<properties>
-		<opensearch.version>1.3.0</opensearch.version>
+		<opensearch.version>2.3.0</opensearch.version>
 	</properties>
 
 	<dependencies>
diff --git a/flink-connector-opensearch/src/test/java/org/apache/flink/streaming/connectors/opensearch/OpensearchSinkTest.java b/flink-connector-opensearch/src/test/java/org/apache/flink/streaming/connectors/opensearch/OpensearchSinkTest.java
index 9d29b2e..9d039da 100644
--- a/flink-connector-opensearch/src/test/java/org/apache/flink/streaming/connectors/opensearch/OpensearchSinkTest.java
+++ b/flink-connector-opensearch/src/test/java/org/apache/flink/streaming/connectors/opensearch/OpensearchSinkTest.java
@@ -130,7 +130,6 @@ public void testItemFailureRethrownOnInvoke() throws Throwable {
                                 OpType.INDEX,
                                 new Failure(
                                         "test",
-                                        "_doc",
                                         "1",
                                         new Exception("artificial failure for record")))));
         testHarness.open();
@@ -169,7 +168,6 @@ public void testItemFailureRethrownOnCheckpoint() throws Throwable {
                                 OpType.INDEX,
                                 new Failure(
                                         "test",
-                                        "_doc",
                                         "1",
                                         new Exception("artificial failure for record")))));
         testHarness.processElement(new StreamRecord<>("msg"));
@@ -207,7 +205,7 @@ public void testItemFailureRethrownOnCheckpointAfterFlush() throws Throwable {
                                 1,
                                 OpType.INDEX,
                                 new IndexResponse(
-                                        new ShardId("test", "-", 0), "_doc", "1", 0, 0, 1, true))));
+                                        new ShardId("test", "-", 0), "1", 0, 0, 1, true))));
 
         responses.add(
                 createResponse(
@@ -216,7 +214,6 @@ public void testItemFailureRethrownOnCheckpointAfterFlush() throws Throwable {
                                 OpType.INDEX,
                                 new Failure(
                                         "test",
-                                        "_doc",
                                         "2",
                                         new Exception("artificial failure for record")))));
 
@@ -335,7 +332,7 @@ public void testBulkFailureRethrownOnOnCheckpointAfterFlush() throws Throwable {
                                 1,
                                 OpType.INDEX,
                                 new IndexResponse(
-                                        new ShardId("test", "-", 0), "_doc", "1", 0, 0, 1, true))));
+                                        new ShardId("test", "-", 0), "1", 0, 0, 1, true))));
 
         // Let the whole bulk request fail
         responses.add(response -> response.setStatusCode(500));
@@ -398,7 +395,6 @@ public void testAtLeastOnceSink() throws Throwable {
                                 OpType.INDEX,
                                 new Failure(
                                         "test",
-                                        "_doc",
                                         "1",
                                         new Exception("artificial failure for record")))));
 
@@ -408,7 +404,7 @@ public void testAtLeastOnceSink() throws Throwable {
                                 2,
                                 OpType.INDEX,
                                 new IndexResponse(
-                                        new ShardId("test", "-", 0), "_doc", "2", 0, 0, 1, true))));
+                                        new ShardId("test", "-", 0), "2", 0, 0, 1, true))));
 
         testHarness.processElement(new StreamRecord<>("msg"));
 
@@ -474,7 +470,6 @@ public void testDoesNotWaitForPendingRequestsIfFlushingDisabled() throws Excepti
                                 OpType.INDEX,
                                 new Failure(
                                         "test",
-                                        "_doc",
                                         "1",
                                         new Exception("artificial failure for record")))));
 
@@ -514,7 +509,7 @@ public void process(String element, RuntimeContext ctx, RequestIndexer indexer)
             Map<java.lang.String, Object> json = new HashMap<>();
             json.put("data", element);
 
-            indexer.add(Requests.indexRequest().index("index").type("type").id("id").source(json));
+            indexer.add(Requests.indexRequest().index("index").id("id").source(json));
         }
     }