diff --git a/pom.xml b/pom.xml
index cb4cb98..9d56354 100644
--- a/pom.xml
+++ b/pom.xml
@@ -4,7 +4,7 @@
   <parent>
     <groupId>org.codehaus.plexus</groupId>
     <artifactId>plexus</artifactId>
-    <version>11</version>
+    <version>13</version>
   </parent>
 
   <artifactId>plexus-interpolation</artifactId>