diff --git a/releng/releng_build_isojigdo b/releng/releng_build_isojigdo
index 08e006a6..b9da40c3 100755
--- a/releng/releng_build_isojigdo
+++ b/releng/releng_build_isojigdo
@@ -74,6 +74,9 @@ printf "\n\tIN_isolinux=${ISOLINUX_BIN}\n\tIN_bootcat=${BOOT_CAT}\n"
 RES="${IMG}.iso ${IMG}.new ${IMG}.md5 ${IMG}.jigdo ${IMG}.template"
 ############################################################
 main() {
+# version details, incl. underlying libraries
+"${XOR}" -version
+
 # remove cruft from previous runs
 # rm -f ${RES}