--- a/debian/rules	2020-04-10 19:04:55.123562731 +0100
--- b/debian/rules	2020-04-10 19:06:28.432093253 +0100
@@ -4,4 +4,4 @@
 	dh $@
 
 override_dh_auto_build:
-	oggenc debian/wesnoth_heal.wav -o sounds/xdecor_enchanting.ogg
+	oggenc debian/wesnoth_heal.wav -o sounds/xdecor_enchanting.ogg -s $(SOURCE_DATE_EPOCH)