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) {