diff --git a/jmemcached-server/pom.xml b/jmemcached-server/pom.xml
index 189bbd3..9a3d29a 100644
--- a/jmemcached-server/pom.xml
+++ b/jmemcached-server/pom.xml
@@ -147,7 +147,7 @@
         <dependency>
             <groupId>ch.qos.logback</groupId>
             <artifactId>logback-classic</artifactId>
-            <version>1.2.3</version>
+            <version>1.2.13</version>
         </dependency>
         <dependency>
             <groupId>net.devstudy</groupId>