diff --git a/indexes/impl-index/pom.xml b/indexes/impl-index/pom.xml
index 8e203a75..9c8b9585 100644
--- a/indexes/impl-index/pom.xml
+++ b/indexes/impl-index/pom.xml
@@ -339,7 +339,7 @@
         <dependency>
             <groupId>ch.qos.logback</groupId>
             <artifactId>logback-core</artifactId>
-            <version>1.2.3</version>
+            <version>1.3.15</version>
             <scope>runtime</scope>
         </dependency>