diff --git a/lang/java/avro/src/main/java/org/apache/avro/util/internal/JacksonUtils.java b/lang/java/avro/src/main/java/org/apache/avro/util/internal/JacksonUtils.java
index c0ab60c..11f7fd1 100644
--- a/lang/java/avro/src/main/java/org/apache/avro/util/internal/JacksonUtils.java
+++ b/lang/java/avro/src/main/java/org/apache/avro/util/internal/JacksonUtils.java
@@ -18,6 +18,8 @@
 package org.apache.avro.util.internal;
 
 import java.io.IOException;
+import java.math.BigDecimal;
+import java.math.BigInteger;
 import java.nio.charset.StandardCharsets;
 import java.util.ArrayList;
 import java.util.Collection;
@@ -86,6 +88,10 @@
       generator.writeNumber((Integer) datum);
     } else if (datum instanceof Boolean) { // boolean
       generator.writeBoolean((Boolean) datum);
+    } else if (datum instanceof BigInteger) {
+      generator.writeNumber((BigInteger) datum);
+    } else if (datum instanceof BigDecimal) {
+      generator.writeNumber((BigDecimal) datum);
     } else {
       throw new AvroRuntimeException("Unknown datum class: " + datum.getClass());
     }
diff --git a/lang/java/avro/src/test/java/org/apache/avro/util/internal/TestJacksonUtils.java b/lang/java/avro/src/test/java/org/apache/avro/util/internal/TestJacksonUtils.java
index ebd1f37..bf989f6 100644
--- a/lang/java/avro/src/test/java/org/apache/avro/util/internal/TestJacksonUtils.java
+++ b/lang/java/avro/src/test/java/org/apache/avro/util/internal/TestJacksonUtils.java
@@ -22,6 +22,8 @@
 import static org.junit.Assert.assertArrayEquals;
 import static org.junit.Assert.assertEquals;
 
+import java.math.BigDecimal;
+import java.math.BigInteger;
 import java.util.Collections;
 
 import com.fasterxml.jackson.databind.node.*;
@@ -48,6 +50,8 @@
     assertEquals(TextNode.valueOf("\u0001\u0002"), toJsonNode(new byte[] { 1, 2 }));
     assertEquals(TextNode.valueOf("a"), toJsonNode("a"));
     assertEquals(TextNode.valueOf("UP"), toJsonNode(Direction.UP));
+    assertEquals(BigIntegerNode.valueOf(BigInteger.ONE), toJsonNode(BigInteger.ONE));
+    assertEquals(DecimalNode.valueOf(BigDecimal.ONE), toJsonNode(BigDecimal.ONE));
 
     ArrayNode an = JsonNodeFactory.instance.arrayNode();
     an.add(1);