diff --git a/examples/flink-sql/pom.xml b/examples/flink-sql/pom.xml
index c4f42e6ff9e..185bacb0319 100644
--- a/examples/flink-sql/pom.xml
+++ b/examples/flink-sql/pom.xml
@@ -30,7 +30,7 @@
     <properties>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <geotools.scope>compile</geotools.scope>
-        <flink.version>1.19.0</flink.version>
+        <flink.version>1.20.4</flink.version>
         <flink.scope>provided</flink.scope>
         <scala.compat.version>2.12</scala.compat.version>
         <geotools.version>33.1</geotools.version>