diff --git a/hutool-core/src/test/java/org/dromara/hutool/core/util/NumberUtilTest.java b/hutool-core/src/test/java/org/dromara/hutool/core/util/NumberUtilTest.java
index e5867827b..044cfcedc 100644
--- a/hutool-core/src/test/java/org/dromara/hutool/core/util/NumberUtilTest.java
+++ b/hutool-core/src/test/java/org/dromara/hutool/core/util/NumberUtilTest.java
@@ -65,6 +65,12 @@ public class NumberUtilTest {
 		Assertions.assertEquals(new BigDecimal("464"), result);
 	}
 
+	@Test
+	void addTest5() {
+		final BigDecimal add = NumberUtil.add(1686036549717L, 1000);
+		Assertions.assertEquals(1686036550717L, add.longValue());
+	}
+
 	@Test
 	public void addBlankTest() {
 		final BigDecimal result = NumberUtil.add("123", " ");