diff --git a/src/Metadata/LookupTables/Entities.ts b/src/Metadata/LookupTables/Entities.ts
index b1e9f8d..a3e91c0 100644
--- a/src/Metadata/LookupTables/Entities.ts
+++ b/src/Metadata/LookupTables/Entities.ts
@@ -1256,6 +1256,52 @@ export const metadataLookupEntities: readonly ClassMetadata[] = [
     "dxfName": "LINE",
     "dxfSubClassName": "AcDbLine"
   },
+  {
+    "typeName": "LwPolyline",
+    "baseTypeName": "Entity",
+    "properties": [
+      {
+        "propertyName": "constantWidth",
+        "valueCodes": [
+          43
+        ],
+        "referenceType": 0
+      },
+      {
+        "propertyName": "elevation",
+        "valueCodes": [
+          38
+        ],
+        "referenceType": 0
+      },
+      {
+        "propertyName": "flags",
+        "valueCodes": [
+          70
+        ],
+        "referenceType": 0
+      },
+      {
+        "propertyName": "normal",
+        "valueCodes": [
+          210,
+          220,
+          230
+        ],
+        "referenceType": 0
+      },
+      {
+        "propertyName": "thickness",
+        "valueCodes": [
+          39
+        ],
+        "referenceType": 0
+      }
+    ],
+    "systemVariables": [],
+    "dxfName": "LWPOLYLINE",
+    "dxfSubClassName": "AcDbPolyline"
+  },
   {
     "typeName": "Mesh",
     "baseTypeName": "Entity",
diff --git a/tests/IO/DXF/DxfReader.test.ts b/tests/IO/DXF/DxfReader.test.ts
index 7efba15..957fe31 100644
--- a/tests/IO/DXF/DxfReader.test.ts
+++ b/tests/IO/DXF/DxfReader.test.ts
@@ -4,6 +4,7 @@ import { DxfReader } from '../../../src/IO/DXF/DxfReader.js';
 import { ACadVersion } from '../../../src/ACadVersion.js';
 import { DxfBinaryReader } from '../../../src/IO/DXF/DxfStreamReader/DxfBinaryReader.js';
 import { encodeCadString, getDecoderEncodingLabel } from '../../../src/IO/TextEncoding.js';
+import { LwPolyline } from '../../../src/Entities/LwPolyline.js';
 
 const dxfAsciiFiles = getDxfAsciiFiles();
 const dxfBinaryFiles = getDxfBinaryFiles();
@@ -122,6 +123,41 @@ describe('DxfReaderTests', () => {
     expect(streamReader.find('layer-säöü')).toBe(true);
   });
 
+  it('ReadLwPolylineSubclassFields', () => {
+    const data = createAsciiDxf([
+      '0', 'SECTION',
+      '2', 'HEADER',
+      '9', '$ACADVER',
+      '1', 'AC1015',
+      '0', 'ENDSEC',
+      '0', 'SECTION',
+      '2', 'ENTITIES',
+      '0', 'LWPOLYLINE',
+      '5', '1F',
+      '100', 'AcDbEntity',
+      '8', '0',
+      '100', 'AcDbPolyline',
+      '90', '2',
+      '70', '1',
+      '38', '5.0',
+      '39', '2.0',
+      '43', '0.5',
+      '10', '0.0', '20', '0.0',
+      '10', '10.0', '20', '0.0',
+      '0', 'ENDSEC',
+      '0', 'EOF',
+    ], 'ANSI_1252');
+
+    const doc = new DxfReader(data).read();
+    const polyline = [...doc.entities].find(e => e instanceof LwPolyline) as LwPolyline;
+
+    expect(polyline.vertices.length).toBe(2);
+    expect(polyline.isClosed).toBe(true);
+    expect(polyline.elevation).toBe(5);
+    expect(polyline.thickness).toBe(2);
+    expect(polyline.constantWidth).toBe(0.5);
+  });
+
   describe.each(dxfAsciiFiles.map(f => [f.fileName, f]))('ASCII: %s', (_name, test) => {
     it('ReadHeaderAscii', () => {
       const data = readFileAsUint8Array(test.path);