Fixed class file version conflicts.

Change-Id: I11c60c75c7824a85ee690c7510f2834df61ed2df
diff --git a/pom.xml b/pom.xml
index a46c24b..c38fef7 100644
--- a/pom.xml
+++ b/pom.xml
@@ -35,7 +35,7 @@
 	<properties>
 		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
 		<jersey.version>1.19.4</jersey.version>
-    	<log4j.version>[2.17.1,)</log4j.version>
+    	<log4j.version>2.17.2</log4j.version>
 	</properties>
 
 	<dependencies>