diff -urNad chiark-utils.orig/chiark-utils-4.4.2/debian/rules chiark-utils/chiark-utils-4.4.2/debian/rules
--- chiark-utils.orig/chiark-utils-4.4.2/debian/rules	2015-02-07 11:14:57.002459672 +0000
+++ chiark-utils/chiark-utils-4.4.2/debian/rules	2015-02-07 11:20:37.969488231 +0000
@@ -63,7 +63,7 @@
 			$t/$$p/usr/share/doc/$$p/; \
 		ln -s changelog.gz \
 			$t/$$p/usr/share/doc/$$p/changelog.Debian.gz; \
-		gzip -9v $t/$$p/usr/share/doc/$$p/changelog; \
+		gzip -9vn $t/$$p/usr/share/doc/$$p/changelog; \
 		done
 	#
 	install -d $t/chiark-rwbuffer/usr/bin
@@ -93,7 +93,7 @@
 		$t/chiark-utils-bin/usr/share/man/man8/trivsoundd.8
 	rmdir	$t/chiark-utils-bin/usr/sbin
 	#
-	gzip -9f $t/*/usr/share/man/man*/*
+	gzip -9fn $t/*/usr/share/man/man*/*
 
 binary-hook-chiark-backup:
 binary-hook-chiark-rwbuffer: