diff --git a/src/main/java/org/embulk/parser/jsonl/JsonlParserPlugin.java b/src/main/java/org/embulk/parser/jsonl/JsonlParserPlugin.java
index 2107aff..cf6184e 100644
--- a/src/main/java/org/embulk/parser/jsonl/JsonlParserPlugin.java
+++ b/src/main/java/org/embulk/parser/jsonl/JsonlParserPlugin.java
@@ -155,9 +155,7 @@ public void run(TaskSource taskSource, Schema schema, FileInput input, PageOutpu
     final SchemaConfig schemaConfig = getSchemaConfig(task);
     final TimestampFormatter[] timestampFormatters = newTimestampFormatters(task, schemaConfig);
     final Charset charset = Charset.forName(task.getCharset());
-    final Newline newline = Newline.valueOf(task.getNewline());
-    final LineDelimiter lineDelimiter = newlineToLineDelimiter(newline);
-    final LineDecoder decoder = LineDecoder.of(input, charset, lineDelimiter);
+    final LineDecoder decoder = LineDecoder.of(input, charset, null);
     final JsonParser jsonParser = newJsonParser();
     final boolean stopOnInvalidRecord = task.getStopOnInvalidRecord();
 
diff --git a/src/test/java/org/embulk/parser/jsonl/TestJsonlParserPlugin.java b/src/test/java/org/embulk/parser/jsonl/TestJsonlParserPlugin.java
index 2538b4f..597b554 100644
--- a/src/test/java/org/embulk/parser/jsonl/TestJsonlParserPlugin.java
+++ b/src/test/java/org/embulk/parser/jsonl/TestJsonlParserPlugin.java
@@ -364,6 +364,78 @@ public void testEmptyLinesWithStopOnInvalidRecord() throws Exception {
     assertEquals(2, records.size());
   }
 
+  /**
+   * Test case: Config specifies LF, but actual data uses CRLF. This should process all 3 lines, not
+   * just the first one.
+   */
+  @Test
+  public void testMismatchConfigLFDataCRLF() throws Exception {
+    SchemaConfig schema = schema(column("id", LONG), column("name", STRING));
+    ConfigSource config = config().set("columns", schema).set("newline", "LF");
+
+    // Create test data with CRLF line endings
+    String testData =
+        "{\"id\":1,\"name\":\"Alice\"}\r\n"
+            + "{\"id\":2,\"name\":\"Bob\"}\r\n"
+            + "{\"id\":3,\"name\":\"Charlie\"}\r\n";
+
+    List<Object[]> records = runParser(config, testData);
+
+    // Should process all 3 records, not just 1
+    assertEquals("Should process all 3 records with CRLF data", 3, records.size());
+    assertEquals(1L, records.get(0)[0]);
+    assertEquals("Alice", records.get(0)[1]);
+    assertEquals(2L, records.get(1)[0]);
+    assertEquals("Bob", records.get(1)[1]);
+    assertEquals(3L, records.get(2)[0]);
+    assertEquals("Charlie", records.get(2)[1]);
+  }
+
+  /**
+   * Test case: Config specifies CRLF, but actual data uses LF. This should process all 3 lines, not
+   * just the first one.
+   */
+  @Test
+  public void testMismatchConfigCRLFDataLF() throws Exception {
+    SchemaConfig schema = schema(column("id", LONG), column("name", STRING));
+    ConfigSource config = config().set("columns", schema).set("newline", "CRLF");
+
+    // Create test data with LF line endings
+    String testData =
+        "{\"id\":1,\"name\":\"Alice\"}\n"
+            + "{\"id\":2,\"name\":\"Bob\"}\n"
+            + "{\"id\":3,\"name\":\"Charlie\"}\n";
+
+    List<Object[]> records = runParser(config, testData);
+
+    // Should process all 3 records, not just 1
+    assertEquals("Should process all 3 records with LF data", 3, records.size());
+    assertEquals(1L, records.get(0)[0]);
+    assertEquals("Alice", records.get(0)[1]);
+    assertEquals(2L, records.get(1)[0]);
+    assertEquals("Bob", records.get(1)[1]);
+    assertEquals(3L, records.get(2)[0]);
+    assertEquals("Charlie", records.get(2)[1]);
+  }
+
+  /** Test case: Config specifies CR, but actual data uses LF. */
+  @Test
+  public void testMismatchConfigCRDataLF() throws Exception {
+    SchemaConfig schema = schema(column("id", LONG), column("name", STRING));
+    ConfigSource config = config().set("columns", schema).set("newline", "CR");
+
+    // Create test data with LF line endings
+    String testData =
+        "{\"id\":1,\"name\":\"Alice\"}\n"
+            + "{\"id\":2,\"name\":\"Bob\"}\n"
+            + "{\"id\":3,\"name\":\"Charlie\"}\n";
+
+    List<Object[]> records = runParser(config, testData);
+
+    // Should process all 3 records, not just 1
+    assertEquals("Should process all 3 records with LF data and CR config", 3, records.size());
+  }
+
   private ConfigSource config() {
     return CONFIG_MAPPER_FACTORY.newConfigSource();
   }
@@ -388,6 +460,27 @@ public void run(TaskSource taskSource, Schema schema) {
     return readRecords(schemaRef[0], output.pages);
   }
 
+  private List<Object[]> runParser(ConfigSource config, String testData) {
+    plugin = new JsonlParserPlugin();
+    MockPageOutput output = new MockPageOutput();
+    final ByteArrayInputStream inputStream =
+        new ByteArrayInputStream(testData.getBytes(StandardCharsets.UTF_8));
+    final Schema[] schemaRef = new Schema[1];
+
+    plugin.transaction(
+        config,
+        new ParserPlugin.Control() {
+          @Override
+          public void run(TaskSource taskSource, Schema schema) {
+            schemaRef[0] = schema;
+            FileInput input = createFileInput(inputStream);
+            plugin.run(taskSource, schema, input, output);
+          }
+        });
+
+    return readRecords(schemaRef[0], output.pages);
+  }
+
   private ByteArrayInputStream createInputStream(List<String> lines) {
     StringBuilder sb = new StringBuilder();
     for (String line : lines) {