Use same version of Log4j2 as Struts does
diff --git a/app/pom.xml b/app/pom.xml
index ed8d4ad..7802a8a 100644
--- a/app/pom.xml
+++ b/app/pom.xml
@@ -45,7 +45,7 @@
         <jsp-api.version>2.2</jsp-api.version>
         <jstl.version>1.2</jstl.version>
         <log4j.version>1.2.17</log4j.version>
-        <log4j2.version>2.8.2</log4j2.version>
+        <log4j2.version>2.10.0</log4j2.version>
         <lucene.version>4.10.4</lucene.version>
         <oauth-core.version>20100527</oauth-core.version>
         <maven-war.version>3.1.0</maven-war.version>