diff --git a/azure/azure-iot-hub-device-simulator/pom.xml b/azure/azure-iot-hub-device-simulator/pom.xml
index 9c3b99bf..656adcb9 100644
--- a/azure/azure-iot-hub-device-simulator/pom.xml
+++ b/azure/azure-iot-hub-device-simulator/pom.xml
@@ -35,7 +35,7 @@
         <dependency>
             <groupId>ch.qos.logback</groupId>
             <artifactId>logback-classic</artifactId>
-            <version>1.2.3</version>
+            <version>1.2.13</version>
         </dependency>
         <dependency>
             <groupId>com.google.code.findbugs</groupId>