diff --git a/pom.xml b/pom.xml
index 37b3ee8c..514cefaa 100644
--- a/pom.xml
+++ b/pom.xml
@@ -56,6 +56,7 @@
 			<plugin>
 				<groupId>org.codehaus.mojo</groupId>
 				<artifactId>cobertura-maven-plugin</artifactId>
+				<version>2.7</version>
 				<configuration>
 					<check>
 						<haltOnFailure>false</haltOnFailure>
@@ -95,6 +96,7 @@
 			<plugin>
 				<groupId>com.mycila.maven-license-plugin</groupId>
 				<artifactId>maven-license-plugin</artifactId>
+				<version>1.10.b1</version>
 				<configuration>
 					<header>src/main/resources/header.txt</header>
 				</configuration>
@@ -198,13 +200,14 @@
 				</configuration>
 			</plugin>
 			<plugin>
-  <groupId>org.apache.maven.plugins</groupId>
-  <artifactId>maven-surefire-plugin</artifactId>
-  <configuration>
-    <forkCount>3</forkCount>
-    <reuseForks>true</reuseForks>
-    <argLine>-Xmx1024m -XX:MaxPermSize=256m</argLine>
-  </configuration>
+				<groupId>org.apache.maven.plugins</groupId>
+				<artifactId>maven-surefire-plugin</artifactId>
+				<version>2.12.4</version>
+				<configuration>
+					<forkCount>3</forkCount>
+					<reuseForks>true</reuseForks>
+					<argLine>-Xmx1024m -XX:MaxPermSize=256m</argLine>
+				</configuration>
 </plugin>
 		</plugins>
 	</build>
diff --git a/src/main/java/org/xmlcml/norma/util/TransformerWrapper.java b/src/main/java/org/xmlcml/norma/util/TransformerWrapper.java
index 92bfd45c..55033a22 100644
--- a/src/main/java/org/xmlcml/norma/util/TransformerWrapper.java
+++ b/src/main/java/org/xmlcml/norma/util/TransformerWrapper.java
@@ -16,6 +16,9 @@
 import javax.xml.transform.stream.StreamResult;
 import javax.xml.transform.stream.StreamSource;
 
+import net.sf.saxon.TransformerFactoryImpl;
+import net.sf.saxon.Configuration;
+import net.sf.saxon.lib.FeatureKeys;
 import nu.xom.Document;
 import nu.xom.Element;
 
@@ -61,9 +64,9 @@ public Transformer createTransformer(File stylesheet) throws Exception {
 	}
 
 	public Transformer createTransformer(org.w3c.dom.Document xslStylesheet) throws Exception {
-		System.setProperty(JAVAX_XML_TRANSFORM_TRANSFORMER_FACTORY,
-	            NET_SF_SAXON_TRANSFORMER_FACTORY_IMPL);
-	    TransformerFactory tfactory = TransformerFactory.newInstance();
+		Configuration config = new Configuration();
+		config.setConfigurationProperty(FeatureKeys.SUPPRESS_XSLT_NAMESPACE_CHECK, "true");
+	    TransformerFactory tfactory = new TransformerFactoryImpl(config);
 	    DOMSource domSource = new DOMSource(xslStylesheet);
 	    javaxTransformer = tfactory.newTransformer(domSource);
 		return javaxTransformer;