diff --git a/pom.xml b/pom.xml
index 8c5ed40..932316f 100644
--- a/pom.xml
+++ b/pom.xml
@@ -140,6 +140,7 @@
       <groupId>ch.qos.logback</groupId>
       <artifactId>logback-classic</artifactId>
       <version>${logback.version}</version>
+      <optional>true</optional>
     </dependency>
   </dependencies>