diff --git a/pom.xml b/pom.xml
index 62f98cc..dc701d8 100644
--- a/pom.xml
+++ b/pom.xml
@@ -159,7 +159,7 @@
         <dependency>
             <groupId>ch.qos.logback</groupId>
             <artifactId>logback-core</artifactId>
-            <version>1.3.12</version>
+            <version>1.5.13</version>
         </dependency>
         <dependency>
             <groupId>javax.mail</groupId>