Index: /trunk/build.xml
===================================================================
--- /trunk/build.xml	(revision 14020)
+++ /trunk/build.xml	(revision 14021)
@@ -791,5 +791,5 @@
         <sequential>
             <echo message="Generating Taginfo for type @{type} to @{output}"/>
-            <groovy src="${taginfoextract}" classpath="${dist.jar}:${spotbugs.dir}/spotbugs-annotations.jar">
+            <groovy src="${taginfoextract}" classpath="${dist.jar};${toString:groovy.classpath};${spotbugs.dir}/spotbugs-annotations.jar">
                 <arg value="-t"/>
                 <arg value="@{type}"/>
@@ -805,5 +805,6 @@
 
     <target name="taginfo" depends="dist">
-        <taskdef name="groovy" classname="org.codehaus.groovy.ant.Groovy" classpath="${toString:groovy.classpath};${tools.dir}/commons-cli-1.3.1.jar"/>
+        <!-- http://docs.groovy-lang.org/2.5.0/html/documentation/#_the_groovy_ant_task -->
+        <taskdef name="groovy" classname="org.codehaus.groovy.ant.Groovy" classpathref="groovy.classpath"/>
         <property name="taginfoextract" value="scripts/TagInfoExtract.groovy"/>
         <property name="imgurlprefix" value="http://josm.openstreetmap.de/download/taginfo/taginfo-img"/>
@@ -814,5 +815,5 @@
 
     <target name="imageryindex" depends="init-properties">
-        <taskdef name="groovy" classname="org.codehaus.groovy.ant.Groovy" classpath="${toString:groovy.classpath};${tools.dir}/commons-cli-1.3.1.jar"/>
+        <taskdef name="groovy" classname="org.codehaus.groovy.ant.Groovy" classpathref="groovy.classpath"/>
         <echo message="Checking editor imagery difference"/>
         <groovy src="scripts/SyncEditorLayerIndex.groovy" classpath="${dist.jar}">
Index: /trunk/scripts/TagInfoExtract.groovy
===================================================================
--- /trunk/scripts/TagInfoExtract.groovy	(revision 14020)
+++ /trunk/scripts/TagInfoExtract.groovy	(revision 14021)
@@ -13,4 +13,7 @@
 import java.nio.file.Files
 import java.nio.file.Path
+import java.time.Instant
+import java.time.ZoneId
+import java.time.format.DateTimeFormatter
 
 import javax.imageio.ImageIO
@@ -53,5 +56,4 @@
 
 import edu.umd.cs.findbugs.annotations.SuppressFBWarnings
-import groovy.cli.commons.CliBuilder
 import groovy.json.JsonBuilder
 
@@ -368,5 +370,5 @@
                 contact_email: "josm-dev@openstreetmap.org",
         ]
-        json data_format: 1, data_updated: new Date().format("yyyyMMdd'T'hhmmss'Z'", TimeZone.getTimeZone('UTC')), project: project, tags: tags
+        json data_format: 1, data_updated: DateTimeFormatter.ofPattern("yyyyMMdd'T'hhmmss'Z'").withZone(ZoneId.of("Z")).format(Instant.now()), project: project, tags: tags
 
         if (output_file != null) {