diff --git a/build.xml b/build.xml
index 7e996096..2ce421fe 100644
--- a/build.xml
+++ b/build.xml
@@ -119,7 +119,7 @@
 			<zipfileset src="${dir.lib}/jna.jar">
 				<include name="com/sun/jna/**" />
 			</zipfileset>
-			
+
 			<zipfileset src="${dir.lib}/platform.jar">
 				<include name="com/sun/jna/platform/win32/**" />
 			</zipfileset>
@@ -150,12 +150,12 @@
 			<zipfileset src="${dir.lib}/sevenzipjbinding.jar">
 				<include name="net/sf/sevenzipjbinding/**" />
 			</zipfileset>
-			
+
 			<!-- Ivy for @Grapes automatic dependency management -->
 			<zipfileset src="${dir.lib}/scripting/ivy.jar">
 				<include name="org/apache/ivy/**" />
 			</zipfileset>
-			
+
 			<!-- AntBuilder including dependencies for ant-javamail, ant-commons-net and ant-jsch -->
 			<zipfileset src="${dir.lib}/scripting/ant.jar">
 				<include name="org/apache/tools/**" />
@@ -461,18 +461,8 @@
 
 
 	<target name="svn-update">
-		<typedef resource="org/tigris/subversion/svnant/svnantlib.xml">
-			<classpath>
-				<fileset dir="${dir.lib}/build" includes="*.jar" />
-			</classpath>
-		</typedef>
-		<svnSetting id="svn.settings" svnkit="true" javahl="false" />
-		<svn refid="svn.settings">
-			<update dir="${dir.source}" revision="HEAD" recurse="false" />
-		</svn>
-		<svn refid="svn.settings">
-			<status path="${dir.source}" revisionProperty="svn.revision" />
-		</svn>
+		<taskdef name="groovy" classname="org.codehaus.groovy.ant.Groovy" classpath="${dir.lib}/groovy.jar" />
+		<groovy>properties['svn.revision'] = 'svn update'.execute().text.replaceAll(/\D/, '')</groovy>
 		<echo>Revision: ${svn.revision}</echo>
 	</target>
 
diff --git a/lib/build/ganymed.jar b/lib/build/ganymed.jar
deleted file mode 100644
index e3bde26c..00000000
Binary files a/lib/build/ganymed.jar and /dev/null differ
diff --git a/lib/build/svnClientAdapter.jar b/lib/build/svnClientAdapter.jar
deleted file mode 100644
index a9d6ea72..00000000
Binary files a/lib/build/svnClientAdapter.jar and /dev/null differ
diff --git a/lib/build/svnant.jar b/lib/build/svnant.jar
deleted file mode 100644
index 5d7e44ec..00000000
Binary files a/lib/build/svnant.jar and /dev/null differ
diff --git a/lib/build/svnjavahl.jar b/lib/build/svnjavahl.jar
deleted file mode 100644
index 71873057..00000000
Binary files a/lib/build/svnjavahl.jar and /dev/null differ
diff --git a/lib/build/svnkit.jar b/lib/build/svnkit.jar
deleted file mode 100644
index 2f53f492..00000000
Binary files a/lib/build/svnkit.jar and /dev/null differ