diff --git a/in-action/Office-Convert/Office-Convert/pom.xml b/in-action/Office-Convert/Office-Convert/pom.xml
index c085d33..e2809ba 100644
--- a/in-action/Office-Convert/Office-Convert/pom.xml
+++ b/in-action/Office-Convert/Office-Convert/pom.xml
@@ -116,7 +116,7 @@
         <dependency>
             <groupId>ch.qos.logback</groupId>
             <artifactId>logback-core</artifactId>
-            <version>1.3.15</version>
+            <version>1.5.35</version>
         </dependency>
         <dependency>
             <groupId>ch.qos.logback</groupId>