diff --git a/samples/doris-demo/flink-demo-v1.1/pom.xml b/samples/doris-demo/flink-demo-v1.1/pom.xml
index d1f3380347336c..861ebe165f5777 100644
--- a/samples/doris-demo/flink-demo-v1.1/pom.xml
+++ b/samples/doris-demo/flink-demo-v1.1/pom.xml
@@ -29,7 +29,7 @@ under the License.
     <properties>
         <scala.version>2.12</scala.version>
         <java.version>1.8</java.version>
-        <flink.version>1.15.3</flink.version>
+        <flink.version>1.20.4</flink.version>
         <fastjson.version>1.2.83</fastjson.version>
         <hadoop.version>2.8.3</hadoop.version>
         <scope.mode>compile</scope.mode>