diff --git a/debian-upstream/rules b/debian-upstream/rules
index 8b4bc8ec7..eda7fed01 100755
--- a/debian-upstream/rules
+++ b/debian-upstream/rules
@@ -70,4 +70,4 @@ override_dh_installchangelogs:
 	dh_installchangelogs NEWS.md
 
 override_dh_builddeb:
-	dh_builddeb -- -Zxz -z9
+	dh_builddeb -- -Zxz -z8