diff --git a/pom.xml b/pom.xml
index 04a10d4d..b68a4b1c 100644
--- a/pom.xml
+++ b/pom.xml
@@ -69,6 +69,7 @@
 			<plugin>
 				<groupId>org.apache.maven.plugins</groupId>
 				<artifactId>maven-source-plugin</artifactId>
+				<version>2.2.1</version>
 				<executions>
 					<execution>
 						<id>attach-sources</id>
@@ -81,6 +82,7 @@
 			<plugin>
 				<groupId>org.apache.maven.plugins</groupId>
 				<artifactId>maven-javadoc-plugin</artifactId>
+				<version>2.9.1</version>
 				<executions>
 					<execution>
 						<id>attach-javadocs</id>