diff --git a/pom.xml b/pom.xml
index d3117fcea0..29154b5618 100644
--- a/pom.xml
+++ b/pom.xml
@@ -544,6 +544,7 @@
           <plugin>
             <groupId>org.apache.maven.plugins</groupId>
             <artifactId>maven-javadoc-plugin</artifactId>
+            <version>2.9.1</version>
             <configuration>
               <linksource>true</linksource>
               <notimestamp>true</notimestamp>