diff --git a/util/pom.xml b/util/pom.xml
index 658dad8..cee8d1f 100644
--- a/util/pom.xml
+++ b/util/pom.xml
@@ -28,7 +28,7 @@
         <dependency>
             <groupId>ch.qos.logback</groupId>
             <artifactId>logback-classic</artifactId>
-            <version>1.2.8</version>
+            <version>1.2.13</version>
         </dependency>
         <dependency>
             <groupId>org.open-eid.cdoc4j</groupId>