diff --git a/pom.xml b/pom.xml
index 1b741d9..c8ae879 100644
--- a/pom.xml
+++ b/pom.xml
@@ -88,6 +88,9 @@
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-javadoc-plugin</artifactId>
                 <version>2.10.4</version>
+                <configuration>
+                    <source>8</source>
+                </configuration>
                 <executions>
                     <execution>
                         <id>attach-javadocs</id>