--- a/debian/rules	2021-09-24 09:20:53.800313098 +0100
--- b/debian/rules	2021-09-24 09:35:32.356026521 +0100
@@ -5,9 +5,15 @@
 
 export DEB_BUILD_MAINT_OPTIONS=hardening=+all
 
+PACKAGE_YEAR = $(shell date --utc --date=@$(SOURCE_DATE_EPOCH) '+%Y')
+PACKAGE_DATE = $(shell date --utc --date=@$(SOURCE_DATE_EPOCH) +'%B %d, %Y')
+
 %:
 	dh $@
 
+override_dh_auto_build:
+	dh_auto_build -- PACKAGE_YEAR="$(PACKAGE_YEAR)" PACKAGE_DATE="$(PACKAGE_DATE)"
+
 override_dh_auto_test:
 ifeq (,$(filter nocheck,$(DEB_BUILD_OPTIONS)))
 	xvfb-run xterm -e '( dh_auto_test ; echo $$? ) | tee debian/xterm_dh_auto_test.log'