diff --git a/app-4-rxtx-qbang/pom.xml b/app-4-rxtx-qbang/pom.xml
index 4cb5d19..1ead6cb 100644
--- a/app-4-rxtx-qbang/pom.xml
+++ b/app-4-rxtx-qbang/pom.xml
@@ -54,7 +54,7 @@
         <dependency>
             <groupId>ch.qos.logback</groupId>
             <artifactId>logback-core</artifactId>
-            <version>0.9.29</version>
+            <version>1.2.0</version>
             <scope>compile</scope>
         </dependency>