diff --git a/examples/iot/iot-data-processing-pipeline/flink/pom.xml b/examples/iot/iot-data-processing-pipeline/flink/pom.xml
index 28e3bcd..8ed6888 100644
--- a/examples/iot/iot-data-processing-pipeline/flink/pom.xml
+++ b/examples/iot/iot-data-processing-pipeline/flink/pom.xml
@@ -202,7 +202,7 @@
         <dependency>
             <groupId>org.apache.logging.log4j</groupId>
             <artifactId>log4j-core</artifactId>
-            <version>2.23.1</version>
+            <version>2.25.4</version>
             <scope>runtime</scope>
         </dependency>