diff --git a/man/Makefile.am b/man/Makefile.am
index ca68b74..3afe34a 100644
--- a/man/Makefile.am
+++ b/man/Makefile.am
@@ -1,5 +1,5 @@
 .0.1:
-	@sed -e "s/!VERSION!/@JACK_RELEASE@/g" -e "s/!DATE!/`date '+%B %Y'`/g" < $*.0 > $@
+	@sed -e "s/!VERSION!/@JACK_RELEASE@/g" -e "s/!DATE!/`LANG=C date --utc --date="`dpkg-parsechangelog -l../debian/changelog -SDate`" '+%B %Y'`/g" < $*.0 > $@
 	@echo Built $*.1 from template
 
 manpages = $(patsubst %.0,%.1,$(wildcard *.0))