diff --git a/library/pom.xml b/library/pom.xml
index 67287019..960e678c 100644
--- a/library/pom.xml
+++ b/library/pom.xml
@@ -158,8 +158,8 @@
 					<!-- http://stackoverflow.com/questions/574594/how-can-i-create-an-executable-jar-with-dependencies-using-maven
                         mvn clean compile assembly:single -->
 					<!-- or whatever version you use -->
-					<source>9</source>
-					<target>9</target>
+					<source>8</source>
+					<target>8</target>
 				</configuration>
 			</plugin>
 			<plugin>