diff --git a/abuild-sign.in b/abuild-sign.in
index 2531d55..d3bc4d2 100644
--- a/abuild-sign.in
+++ b/abuild-sign.in
@@ -39,7 +39,7 @@ do_sign() {
 		fi
 
 		tmptargz=$(mktemp)
-		tar -f - -c "$sig" | abuild-tar --cut | $gzip -9 > "$tmptargz"
+		tar -f - -c "$sig" | abuild-tar --cut | $gzip -n -9 > "$tmptargz"
 		tmpsigned=$(mktemp)
 		cat "$tmptargz" "$i" > "$tmpsigned"
 		rm -f "$tmptargz" "$sig"