diff --git a/step-9/pom.xml b/step-9/pom.xml
index 562f09d..7b89c3a 100644
--- a/step-9/pom.xml
+++ b/step-9/pom.xml
@@ -90,7 +90,7 @@
     <dependency>
       <groupId>ch.qos.logback</groupId>
       <artifactId>logback-classic</artifactId>
-      <version>1.2.3</version>
+      <version>1.3.12</version>
     </dependency>
     <dependency>
       <groupId>org.hsqldb</groupId>