diff --git a/pom.xml b/pom.xml
index f07f7e7..7771db8 100644
--- a/pom.xml
+++ b/pom.xml
@@ -23,7 +23,7 @@
     <properties>
         <wicket.version>7.16.0</wicket.version>
         <jetty9.version>9.2.13.v20150730</jetty9.version>
-        <log4j.version>2.5</log4j.version>
+        <log4j.version>2.17.1</log4j.version>
         <junit.version>4.12</junit.version>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <!-- allowed values: R7, 1.0, 1.5, 2.0 or none -->