diff --git a/connector/src/main/java/io/questdb/kafka/QuestDBSinkConnectorConfig.java b/connector/src/main/java/io/questdb/kafka/QuestDBSinkConnectorConfig.java
index ea0d689..1fb6a5f 100644
--- a/connector/src/main/java/io/questdb/kafka/QuestDBSinkConnectorConfig.java
+++ b/connector/src/main/java/io/questdb/kafka/QuestDBSinkConnectorConfig.java
@@ -70,7 +70,7 @@ public final class QuestDBSinkConnectorConfig extends AbstractConfig {
     public static final String TIMESTAMP_FORMAT = "timestamp.string.format";
     private static final String TIMESTAMP_FORMAT_DOC = "Timestamp format. Used when parsing timestamp string fields";
 
-    private static final String DEFAULT_TIMESTAMP_FORMAT = "yyyy-MM-dd'T'HH:mm:ss.SSSSSS'Z'";
+    private static final String DEFAULT_TIMESTAMP_FORMAT = "yyyy-MM-ddTHH:mm:ss.SSSUUUZ";
 
     public QuestDBSinkConnectorConfig(ConfigDef config, Map<String, String> parsedConfig) {
         super(config, parsedConfig);
diff --git a/connector/src/test/java/io/questdb/kafka/QuestDBSinkConnectorEmbeddedTest.java b/connector/src/test/java/io/questdb/kafka/QuestDBSinkConnectorEmbeddedTest.java
index c1f7d1c..cb47e40 100644
--- a/connector/src/test/java/io/questdb/kafka/QuestDBSinkConnectorEmbeddedTest.java
+++ b/connector/src/test/java/io/questdb/kafka/QuestDBSinkConnectorEmbeddedTest.java
@@ -796,6 +796,37 @@ public void testParsingStringTimestamp() {
                 "select * from " + topicName);
     }
 
+    @Test
+    public void testParsingStringTimestamp_defaultPattern() {
+        connect.kafka().createTopic(topicName, 1);
+        Map<String, String> props = ConnectTestUtils.baseConnectorProps(questDBContainer, topicName);
+        props.put("value.converter.schemas.enable", "false");
+        props.put(QuestDBSinkConnectorConfig.DESIGNATED_TIMESTAMP_COLUMN_NAME_CONFIG, "born");
+        props.put(QuestDBSinkConnectorConfig.INCLUDE_KEY_CONFIG, "false");
+        props.put(QuestDBSinkConnectorConfig.TIMESTAMP_STRING_FIELDS, "born,death");
+
+        connect.configureConnector(ConnectTestUtils.CONNECTOR_NAME, props);
+        ConnectTestUtils.assertConnectorTaskRunningEventually(connect);
+
+        QuestDBUtils.assertSql(questDBContainer,
+                "{\"ddl\":\"OK\"}\n",
+                "create table " + topicName + " (firstname string, lastname string, death timestamp, born timestamp) timestamp(born)",
+                QuestDBUtils.Endpoint.EXEC);
+
+        String birthTimestamp = "1985-08-02T16:41:55.402095Z";
+        String deadTimestamp = "2023-08-02T16:41:55.402095Z";
+        connect.kafka().produce(topicName, "foo",
+                "{\"firstname\":\"John\""
+                        + ",\"lastname\":\"Doe\""
+                        + ",\"death\":\"" + deadTimestamp + "\""
+                        + ",\"born\":\"" + birthTimestamp + "\"}"
+        );
+
+        QuestDBUtils.assertSqlEventually(questDBContainer, "\"firstname\",\"lastname\",\"death\",\"born\"\r\n" +
+                        "\"John\",\"Doe\",\"2023-08-02T16:41:55.402095Z\",\"1985-08-02T16:41:55.402095Z\"\r\n",
+                "select * from " + topicName);
+    }
+
     @Test
     public void testCustomPrefixWithPrimitiveKeyAndValues() {
         connect.kafka().createTopic(topicName, 1);