diff --git a/mod.conf b/mod.conf
index aeffb54..6a16208 100644
--- a/mod.conf
+++ b/mod.conf
@@ -1,3 +1,3 @@
 name = basic_materials
-optional_depends = moreores, default, mesecons_materials, dye, bucket, fl_stone, fl_trees, mcl_sounds
+optional_depends = moreores, default, mesecons_materials, dye, bucket, fl_stone, fl_trees, mcl_sounds, hades_sounds
 min_minetest_version = 5.2.0