diff --git a/pom.xml b/pom.xml
index d0179b4..7f91eab 100644
--- a/pom.xml
+++ b/pom.xml
@@ -18,13 +18,15 @@
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
         <scufl2.version>0.13.1</scufl2.version>
-        <scufl2.wfdesc.version>0.3.3</scufl2.wfdesc.version>
+        <scufl2.wfdesc.version>0.3.5</scufl2.wfdesc.version>
+	<robundle.version>0.3.1</robundle.version>
+	<jena.version>2.11.0</jena.version>
     </properties>
     <dependencies>
         <dependency>
             <groupId>org.apache.jena</groupId>
             <artifactId>jena-arq</artifactId>
-            <version>2.11.0</version>
+	    <version>${jena.version}</version>
         </dependency>
         <dependency>
             <groupId>uk.org.taverna.scufl2</groupId>
@@ -44,6 +46,11 @@
             <optional>true</optional>
         </dependency>
         <dependency>
+            <groupId>org.purl.wf4ever.robundle</groupId>
+            <artifactId>robundle</artifactId>
+	    <version>${robundle.version}</version>
+        </dependency>
+        <dependency>
             <groupId>junit</groupId>
             <artifactId>junit</artifactId>
             <version>4.11</version>
@@ -62,11 +69,6 @@
             <artifactId>commons-configuration</artifactId>
             <version>1.9</version>
         </dependency>
-        <dependency>
-            <groupId>org.purl.wf4ever.robundle</groupId>
-            <artifactId>robundle</artifactId>
-            <version>0.3.1</version>
-        </dependency>
     </dependencies>
 
     <build>