diff --git a/rpm-utils/stamp_spec b/rpm-utils/stamp_spec
index 6dab7d6..0e337ea 100755
--- a/rpm-utils/stamp_spec
+++ b/rpm-utils/stamp_spec
@@ -80,7 +80,7 @@ if [ "$p" = '%packager' ]; then
 	echo 'Configuration error: undefined packager' >&2
 	exit 1
 fi
-d=$(LC_TIME=C date '+%a %b %d %Y')
+d=$(LC_TIME=C date -u '+%a %b %d %Y')
 n='%|SERIAL?{%{SERIAL}:}|%{VERSION}-%{RELEASE}'
 if [ -n "$FORMAT" ]; then
 	qf="$(printf %s "$FORMAT" |sed "s/\$d/$d/g;s/\$p/$p/g;s/\$n/$n/g")"