diff --git a/tests/Cron/CronExpressionTest.php b/tests/Cron/CronExpressionTest.php
index c50f87f..1569a8e 100644
--- a/tests/Cron/CronExpressionTest.php
+++ b/tests/Cron/CronExpressionTest.php
@@ -820,4 +820,11 @@ public function testIssue134ForeachInvalidArgumentOnHours()
         $prev = $cron->getPreviousRunDate(new \DateTimeImmutable('2021-09-07T09:36:00Z'));
         $this->assertEquals(new \DateTime('2021-01-01 00:00:00'), $prev);
     }
+
+    public function testIssue151ExpressionSupportLW()
+    {
+        $cron = new CronExpression('0 10 LW * *');
+        $this->assertTrue($cron->isDue(new \DateTimeImmutable('2023-08-31 10:00:00')));
+        $this->assertFalse($cron->isDue(new \DateTimeImmutable('2023-08-30 10:00:00')));
+    }
 }
diff --git a/tests/Cron/DayOfMonthFieldTest.php b/tests/Cron/DayOfMonthFieldTest.php
index 2fea8b1..c4f3bb9 100644
--- a/tests/Cron/DayOfMonthFieldTest.php
+++ b/tests/Cron/DayOfMonthFieldTest.php
@@ -115,4 +115,10 @@ public function testIncrementAcrossDstChangeLondon(): void
         $f->increment($d, true);
         $this->assertSame("2021-03-27 23:59:00", $d->format("Y-m-d H:i:s"));
     }
+
+    public function testIssue151DOMFieldSupportLW()
+    {
+        $f = new DayOfMonthField();
+        $this->assertTrue($f->validate('LW'));
+    }
 }