diff --git a/pom.xml b/pom.xml
index 3ce21db63a..68fd3e5a5c 100644
--- a/pom.xml
+++ b/pom.xml
@@ -448,6 +448,7 @@
                             <charset>UTF-8</charset>
                             <encoding>UTF-8</encoding>
                             <docencoding>UTF-8</docencoding>
+                            <source>${maven_source_version}</source>
                             <links>
                                 <link>http://docs.oracle.com/javase/8/docs/api</link>
                             </links>