diff --git a/src/main/java/it/geosolutions/geoserver/rest/GeoServerRESTPublisher.java b/src/main/java/it/geosolutions/geoserver/rest/GeoServerRESTPublisher.java
index 3a9f47a..0cb8277 100644
--- a/src/main/java/it/geosolutions/geoserver/rest/GeoServerRESTPublisher.java
+++ b/src/main/java/it/geosolutions/geoserver/rest/GeoServerRESTPublisher.java
@@ -132,10 +132,10 @@ public class GeoServerRESTPublisher {
 	 */
 	public boolean publishStyle(String sldBody) {
 		try {
-			return publishStyle(sldBody,null);
-		} catch (IllegalArgumentException e){
-			if (LOGGER.isEnabledFor(Level.ERROR)){
-				LOGGER.error(e.getLocalizedMessage(),e);
+			return publishStyle(sldBody, null);
+		} catch (IllegalArgumentException e) {
+			if (LOGGER.isEnabledFor(Level.ERROR)) {
+				LOGGER.error(e.getLocalizedMessage(), e);
 			}
 		}
 		return false;
@@ -162,13 +162,15 @@ public class GeoServerRESTPublisher {
 	 * @throws IllegalArgumentException
 	 *             if the style body is null or empty
 	 */
-	public boolean publishStyle(final String sldBody, final String name) throws IllegalArgumentException {
-		if (sldBody==null || sldBody.isEmpty()){
-			throw new IllegalArgumentException("The style body may not be null or empty");
+	public boolean publishStyle(final String sldBody, final String name)
+			throws IllegalArgumentException {
+		if (sldBody == null || sldBody.isEmpty()) {
+			throw new IllegalArgumentException(
+					"The style body may not be null or empty");
 		}
 		StringBuilder sUrl = new StringBuilder(restURL);
 		sUrl.append("/rest/styles");
-		if (name!=null && !name.isEmpty()){
+		if (name != null && !name.isEmpty()) {
 			sUrl.append("?name=").append(name);
 		}
 		final String result = HTTPUtils.post(sUrl.toString(), sldBody,
@@ -209,6 +211,81 @@ public class GeoServerRESTPublisher {
 		return result != null;
 	}
 
+	/**
+	 * Update SLD called as 'name'.
+	 * <P>
+	 * This is the equivalent call with cUrl:
+	 * 
+	 * <PRE>
+	 * {@code curl -u admin:geoserver -XPUT \
+	 *      -H 'Content-type: application/vnd.ogc.sld+xml' \
+	 *      -d @$FULLSLD \
+	 *      http://$GSIP:$GSPORT/$SERVLET/rest/styles/$NAME}
+	 * </PRE>
+	 * 
+	 * @param sldBody
+	 *            the SLD document as an XML String.
+	 * @param name
+	 *            the Style name to modify.
+	 * 
+	 * @return <TT>true</TT> if the operation completed successfully.
+	 * 
+	 * @throws IllegalArgumentException
+	 *             if the style body or name are null or empty
+	 * 
+	 */
+	public boolean updateStyle(final String sldBody, final String name)
+			throws IllegalArgumentException {
+		if (sldBody == null || sldBody.isEmpty()) {
+			throw new IllegalArgumentException(
+					"The style body may not be null or empty");
+		} else if (name == null || name.isEmpty()) {
+			throw new IllegalArgumentException(
+					"The style name may not be null or empty");
+		}
+
+		final StringBuilder sUrl = new StringBuilder(restURL);
+		sUrl.append("/rest/styles/").append(encode(name));
+
+		final String result = HTTPUtils.put(sUrl.toString(), sldBody,
+				"application/vnd.ogc.sld+xml", gsuser, gspass);
+		return result != null;
+	}
+
+	/**
+	 * Update an SLD called 'name'.
+	 * 
+	 * @param sldFile
+	 *            the File containing the SLD document.
+	 * @param name
+	 *            the Style name.
+	 * 
+	 * @return <TT>true</TT> if the operation completed successfully.
+	 * 
+	 * @throws IllegalArgumentException
+	 *             if the sldFile file or name are null or name is empty
+	 *             
+	 */
+	public boolean updateStyle(final File sldFile, final String name)
+			throws IllegalArgumentException {
+
+		if (sldFile == null) {
+			throw new IllegalArgumentException(
+					"Unable to updateStyle using a null parameter file");
+		} else if (name == null || name.isEmpty()) {
+			throw new IllegalArgumentException(
+					"The style name may not be null or empty");
+		}
+
+		final StringBuilder sUrl = new StringBuilder(restURL);
+		sUrl.append("/rest/styles/").append(encode(name));
+
+		final String result = HTTPUtils.put(sUrl.toString(), sldFile,
+				"application/vnd.ogc.sld+xml", gsuser, gspass);
+		return result != null;
+
+	}
+
 	/**
 	 * Remove a Style.<br>
 	 * 
@@ -232,7 +309,7 @@ public class GeoServerRESTPublisher {
 
 		final StringBuffer sUrl = new StringBuffer(restURL);
 
-		// check style name 
+		// check style name
 		// TODO may we whant to throw an exception instead of
 		// change style name?
 		styleName = styleName.replaceAll(":", "_");
@@ -259,9 +336,9 @@ public class GeoServerRESTPublisher {
 	public boolean removeStyle(String styleName) {
 		try {
 			return removeStyle(styleName, true);
-		} catch (IllegalArgumentException e){
-			if (LOGGER.isEnabledFor(Level.ERROR)){
-				LOGGER.error(e.getLocalizedMessage(),e);
+		} catch (IllegalArgumentException e) {
+			if (LOGGER.isEnabledFor(Level.ERROR)) {
+				LOGGER.error(e.getLocalizedMessage(), e);
 			}
 		}
 		return false;
@@ -466,7 +543,7 @@ public class GeoServerRESTPublisher {
 	 * @param layername
 	 * @param srs
 	 * @param defaultStyle
-	 * @return 
+	 * @return
 	 */
 	public boolean publishDBLayer(String workspace, String storename,
 			String layername, String srs, String defaultStyle) {
@@ -649,7 +726,8 @@ public class GeoServerRESTPublisher {
 
 		if (configure != null) {
 			sbUrl.append("?configure=").append(configure);
-			if (params != (NameValuePair[])null && !configure.equals(ParameterConfigure.NONE)) {
+			if (params != (NameValuePair[]) null
+					&& !configure.equals(ParameterConfigure.NONE)) {
 				final String paramString = appendParameters(params);
 				if (!paramString.isEmpty()) {
 					sbUrl.append("&").append(paramString);
@@ -1747,35 +1825,35 @@ public class GeoServerRESTPublisher {
 			final int paramsSize = params.length;
 			if (paramsSize > 0) {
 				int i = 0;
-				NameValuePair param=params[i];
-				while (param!=null && i++<paramsSize){
-					final String name=param.getName();
-					final String value=param.getValue();
+				NameValuePair param = params[i];
+				while (param != null && i++ < paramsSize) {
+					final String name = param.getName();
+					final String value = param.getValue();
 					// success
-					if (name!=null && !name.isEmpty() && value!=null && !value.isEmpty()){
-						sbUrl.append(name).append("=")
-								.append(value);
+					if (name != null && !name.isEmpty() && value != null
+							&& !value.isEmpty()) {
+						sbUrl.append(name).append("=").append(value);
 						// end cycle
-						param=null;
+						param = null;
 					} else {
 						// next value
-						param=params[i];
+						param = params[i];
 					}
 				}
 				for (; i < paramsSize; i++) {
-					param=params[i];
-					if (param!=null){
-						final String name=param.getName();
-						final String value=param.getValue();
-						sbUrl.append(name).append("=")
-								.append(value);
-						if (name!=null && !name.isEmpty() && value!=null && !value.isEmpty()){
+					param = params[i];
+					if (param != null) {
+						final String name = param.getName();
+						final String value = param.getValue();
+						sbUrl.append(name).append("=").append(value);
+						if (name != null && !name.isEmpty() && value != null
+								&& !value.isEmpty()) {
 							sbUrl.append("&").append(name).append("=")
-							.append(value);
+									.append(value);
 						}
-						
+
 					}
-					
+
 				}
 			}
 		}
diff --git a/src/test/java/it/geosolutions/geoserver/rest/publisher/GeoserverRESTStyleTest.java b/src/test/java/it/geosolutions/geoserver/rest/publisher/GeoserverRESTStyleTest.java
index bd73abc..d4ffd6c 100644
--- a/src/test/java/it/geosolutions/geoserver/rest/publisher/GeoserverRESTStyleTest.java
+++ b/src/test/java/it/geosolutions/geoserver/rest/publisher/GeoserverRESTStyleTest.java
@@ -42,182 +42,219 @@ import org.jdom.Namespace;
 import org.springframework.core.io.ClassPathResource;
 
 /**
- * Testcase for publishing layers on geoserver.
- * We need a running GeoServer to properly run the tests. 
- * If such geoserver instance cannot be contacted, tests will be skipped.
- *
+ * Testcase for publishing layers on geoserver. We need a running GeoServer to
+ * properly run the tests. If such geoserver instance cannot be contacted, tests
+ * will be skipped.
+ * 
  * @author etj
  * @author Carlo Cancellieri - carlo.cancellieri@geo-solutions.it
  */
 public class GeoserverRESTStyleTest extends GeoserverRESTTest {
 
-    private final static Logger LOGGER = Logger.getLogger(GeoserverRESTStyleTest.class);
+	private final static Logger LOGGER = Logger
+			.getLogger(GeoserverRESTStyleTest.class);
 
-    public GeoserverRESTStyleTest(String testName) {
-        super(testName);
-    }
+	public GeoserverRESTStyleTest(String testName) {
+		super(testName);
+	}
 
-    public void testStyles() throws IOException {
-        if (!enabled()) return;
-        deleteAll();
+	public void testStyles() throws IOException {
+		if (!enabled())
+			return;
+		deleteAll();
 
-        assertEquals(0, reader.getStyles().size());
+		assertEquals(0, reader.getStyles().size());
 
-        final String styleName = "restteststyle";
-        File sldFile = new ClassPathResource("testdata/restteststyle.sld").getFile();
+		final String styleName = "restteststyle";
+		File sldFile = new ClassPathResource("testdata/restteststyle.sld")
+				.getFile();
 
-        // insert style
-        assertTrue(publisher.publishStyle(sldFile));
-        assertTrue(reader.existsStyle(styleName));
+		// insert style
+		assertTrue(publisher.publishStyle(sldFile));
+		assertTrue(reader.existsStyle(styleName));
 
-        assertFalse(publisher.publishStyle(sldFile));
-        assertTrue(reader.existsStyle(styleName));
+		assertFalse(publisher.publishStyle(sldFile));
+		assertTrue(reader.existsStyle(styleName));
 
-        String sld = reader.getSLD(styleName);
-        assertNotNull(sld);
+		String sld = reader.getSLD(styleName);
+		assertNotNull(sld);
 
-        Element styleEl = JDOMBuilder.buildElement(sld);
-        assertNotNull(styleEl);
+		Element styleEl = JDOMBuilder.buildElement(sld);
+		assertNotNull(styleEl);
 
-        Namespace SLDNS = Namespace.getNamespace("sld", "http://www.opengis.net/sld");
+		Namespace SLDNS = Namespace.getNamespace("sld",
+				"http://www.opengis.net/sld");
 
-        try{
+		try {
 
-            assertEquals(styleName, styleEl.getChild("NamedLayer", SLDNS).getChild("Name",SLDNS).getText());
-            assertEquals("STYLE FOR TESTING PURPOSES", styleEl.getChild("NamedLayer", SLDNS).getChild("UserStyle", SLDNS).getChild("Title", SLDNS).getText());
-        } catch(NullPointerException npe) {
-            fail("Error in SLD");
-        }
+			assertEquals(styleName, styleEl.getChild("NamedLayer", SLDNS)
+					.getChild("Name", SLDNS).getText());
+			assertEquals(
+					"STYLE FOR TESTING PURPOSES",
+					styleEl.getChild("NamedLayer", SLDNS)
+							.getChild("UserStyle", SLDNS)
+							.getChild("Title", SLDNS).getText());
+		} catch (NullPointerException npe) {
+			fail("Error in SLD");
+		}
 
-//        assertEquals(1475, sld.length());
+		// assertEquals(1475, sld.length());
 
-        assertEquals(1, reader.getStyles().size());
-    }
+		assertEquals(1, reader.getStyles().size());
+	}
 
-    protected void cleanupTestStyle(final String styleName) {
-        // dry run delete to work in a known state
-        if (reader.existsStyle(styleName)) {
-            LOGGER.info("Clearing stale test style " + styleName);
-            boolean ok = publisher.removeStyle(styleName);
-            if (!ok) {
-                fail("Could not unpublish style " + styleName);
-            }
-        }
-        assertFalse("Cleanup failed", reader.existsStyle(styleName));
-    }
+	protected void cleanupTestStyle(final String styleName) {
+		// dry run delete to work in a known state
+		if (reader.existsStyle(styleName)) {
+			LOGGER.info("Clearing stale test style " + styleName);
+			boolean ok = publisher.removeStyle(styleName);
+			if (!ok) {
+				fail("Could not unpublish style " + styleName);
+			}
+		}
+		assertFalse("Cleanup failed", reader.existsStyle(styleName));
+	}
 
-    public void testPublishDeleteStyleFile() throws FileNotFoundException, IOException {
-        if (!enabled()) {
-            return;
-        }
-//        Assume.assumeTrue(enabled);
-        final String styleName = "restteststyle";
+	public void testPublishDeleteStyleFile() throws FileNotFoundException,
+			IOException {
+		if (!enabled()) {
+			return;
+		}
+		// Assume.assumeTrue(enabled);
+		final String styleName = "restteststyle";
 
-        File sldFile = new ClassPathResource("testdata/restteststyle.sld").getFile();
+		File sldFile = new ClassPathResource("testdata/restteststyle.sld")
+				.getFile();
 
-        // known state?
-        cleanupTestStyle(styleName);
+		// known state?
+		cleanupTestStyle(styleName);
 
-        // test insert
-        boolean published = publisher.publishStyle(sldFile); // Will take the name from sld contents
-        assertTrue("publish() failed", published);
-        assertTrue(reader.existsStyle(styleName));
+		// test insert
+		boolean published = publisher.publishStyle(sldFile); // Will take the
+																// name from sld
+																// contents
+		assertTrue("publish() failed", published);
+		assertTrue(reader.existsStyle(styleName));
 
-        //test delete
-        boolean ok = publisher.removeStyle(styleName);
-        assertTrue("Unpublish() failed", ok);
-        assertFalse(reader.existsStyle(styleName));
-    }
+		sldFile = new ClassPathResource("testdata/restteststyle2.sld").getFile();
+		published = publisher.updateStyle(sldFile, styleName); // update
+		assertTrue("update() failed", published);
 
-    public void testPublishDeleteStyleString() throws FileNotFoundException, IOException {
-        if (!enabled()) {
-            return;
-        }
-//        Assume.assumeTrue(enabled);
-        String styleName = "restteststyle";
+		// test delete
+		boolean ok = publisher.removeStyle(styleName);
+		assertTrue("Unpublish() failed", ok);
+		assertFalse(reader.existsStyle(styleName));
+	}
 
-        File sldFile = new ClassPathResource("testdata/restteststyle.sld").getFile();
+	public void testPublishDeleteStyleString() throws FileNotFoundException,
+			IOException {
+		if (!enabled()) {
+			return;
+		}
+		// Assume.assumeTrue(enabled);
+		String styleName = "restteststyle";
 
-        // known state?
-        cleanupTestStyle(styleName);
+		File sldFile = new ClassPathResource("testdata/restteststyle.sld")
+				.getFile();
 
-        // test insert
-        String sldContent = IOUtils.toString(new FileInputStream(sldFile));
+		// known state?
+		cleanupTestStyle(styleName);
 
-        boolean published = publisher.publishStyle(sldContent);  // Will take the name from sld contents
-        assertTrue("publish() failed", published);
-        assertTrue(reader.existsStyle(styleName));
-        //test delete
-        boolean ok = publisher.removeStyle(styleName);
-        assertTrue("Unpublish() failed", ok);
-        assertFalse(reader.existsStyle(styleName));
-        
-        styleName = "restteststyle_with_name";
-        // test insert with name
-        published = publisher.publishStyle(sldContent,styleName);  // Will set the name
-        assertTrue("publish() failed", published);
-        assertTrue(reader.existsStyle(styleName));
-        //test delete
-        ok = publisher.removeStyle(styleName);
-        assertTrue("Unpublish() failed", ok);
-        assertFalse(reader.existsStyle(styleName));
-        
-    }
+		// test insert
+		String sldContent = IOUtils.toString(new FileInputStream(sldFile));
 
-    public void testUpdateDefaultStyle() throws FileNotFoundException, IOException {
-        if (!enabled()) {
-            return;
-        }
-        deleteAll();
+		boolean published = publisher.publishStyle(sldContent); // Will take the
+																// name from sld
+																// contents
+		assertTrue("publish() failed", published);
+		assertTrue(reader.existsStyle(styleName));
+		// test delete
+		boolean ok = publisher.removeStyle(styleName);
+		assertTrue("Unpublish() failed", ok);
+		assertFalse(reader.existsStyle(styleName));
 
-        String storeName = "resttestshp";
-        String layerName = "cities";
+		styleName = "restteststyle_with_name";
+		// test insert with name
+		published = publisher.publishStyle(sldContent, styleName); // Will set
+																	// the name
+		assertTrue("publish() failed", published);
+		assertTrue(reader.existsStyle(styleName));
+		String newSldContent = sldContent.replace(
+				"<sld:Title>STYLE FOR TESTING PURPOSES</sld:Title>",
+				"<sld:Title>MODIFIED STYLE FOR TESTING</sld:Title>");
+		published = publisher.updateStyle(newSldContent, styleName); // update
+		assertTrue("publish() failed", published);
 
-        final String styleName = "restteststyle";
-        {
-            File sldFile = new ClassPathResource("testdata/restteststyle.sld").getFile();
-            cleanupTestStyle(styleName);
-            boolean sldpublished = publisher.publishStyle(sldFile); // Will take the name from sld contents
-            assertTrue("style publish() failed", sldpublished);
-            assertTrue(reader.existsStyle(styleName));
-        }
+		// test delete
+		ok = publisher.removeStyle(styleName);
+		assertTrue("Unpublish() failed", ok);
+		assertFalse(reader.existsStyle(styleName));
 
-        final String styleName2 = "restteststyle2";
-        {
-            File sldFile = new ClassPathResource("testdata/restteststyle2.sld").getFile();
-            cleanupTestStyle(styleName2);
-            boolean sldpublished = publisher.publishStyle(sldFile,styleName2);
-            assertTrue("style publish() failed", sldpublished);
-            assertTrue(reader.existsStyle(styleName2));
-        }
+	}
 
-        File zipFile = new ClassPathResource("testdata/resttestshp.zip").getFile();
+	public void testUpdateDefaultStyle() throws FileNotFoundException,
+			IOException {
+		if (!enabled()) {
+			return;
+		}
+		deleteAll();
 
-        assertTrue(publisher.createWorkspace(DEFAULT_WS));
-        
-        // test insert
-        boolean published = publisher.publishShp(DEFAULT_WS, storeName, layerName, zipFile, "EPSG:4326", styleName);
-        assertTrue("publish() failed", published);
-        assertTrue(existsLayer(layerName));
+		String storeName = "resttestshp";
+		String layerName = "cities";
 
-        {
-            RESTLayer layer = reader.getLayer(layerName);
-            LOGGER.info("Layer style is " + layer.getDefaultStyle());
-            assertEquals(styleName, layer.getDefaultStyle());
-        }
+		final String styleName = "restteststyle";
+		{
+			File sldFile = new ClassPathResource("testdata/restteststyle.sld")
+					.getFile();
+			cleanupTestStyle(styleName);
+			boolean sldpublished = publisher.publishStyle(sldFile); // Will take
+																	// the name
+																	// from sld
+																	// contents
+			assertTrue("style publish() failed", sldpublished);
+			assertTrue(reader.existsStyle(styleName));
+		}
 
-        GSLayerEncoder le = new GSLayerEncoder();
-        le.setDefaultStyle(styleName2);
-        publisher.configureLayer(DEFAULT_WS, layerName, le);
+		final String styleName2 = "restteststyle2";
+		{
+			File sldFile = new ClassPathResource("testdata/restteststyle2.sld")
+					.getFile();
+			cleanupTestStyle(styleName2);
+			boolean sldpublished = publisher.publishStyle(sldFile, styleName2);
+			assertTrue("style publish() failed", sldpublished);
+			assertTrue(reader.existsStyle(styleName2));
+		}
 
-        {
-            RESTLayer layer = reader.getLayer(layerName);
-            LOGGER.info("Layer style is " + layer.getDefaultStyle());
-            assertEquals(styleName2, layer.getDefaultStyle());
-        }
+		File zipFile = new ClassPathResource("testdata/resttestshp.zip")
+				.getFile();
 
-        // remove layer and datastore
-        boolean dsRemoved = publisher.removeDatastore(DEFAULT_WS, storeName, true);
-        assertTrue("removeDatastore() failed", dsRemoved);
-    }
+		assertTrue(publisher.createWorkspace(DEFAULT_WS));
+
+		// test insert
+		boolean published = publisher.publishShp(DEFAULT_WS, storeName,
+				layerName, zipFile, "EPSG:4326", styleName);
+		assertTrue("publish() failed", published);
+		assertTrue(existsLayer(layerName));
+
+		{
+			RESTLayer layer = reader.getLayer(layerName);
+			LOGGER.info("Layer style is " + layer.getDefaultStyle());
+			assertEquals(styleName, layer.getDefaultStyle());
+		}
+
+		GSLayerEncoder le = new GSLayerEncoder();
+		le.setDefaultStyle(styleName2);
+		publisher.configureLayer(DEFAULT_WS, layerName, le);
+
+		{
+			RESTLayer layer = reader.getLayer(layerName);
+			LOGGER.info("Layer style is " + layer.getDefaultStyle());
+			assertEquals(styleName2, layer.getDefaultStyle());
+		}
+
+		// remove layer and datastore
+		boolean dsRemoved = publisher.removeDatastore(DEFAULT_WS, storeName,
+				true);
+		assertTrue("removeDatastore() failed", dsRemoved);
+	}
 }