diff --git a/core/src/lib.rs b/core/src/lib.rs
index 80e3e3c6..5b933f84 100644
--- a/core/src/lib.rs
+++ b/core/src/lib.rs
@@ -3,8 +3,11 @@ pub mod entity;
 pub mod fluid;
 pub mod item;
 pub mod net;
+
+#[deprecated = "use crate `rimecraft-registry` instead."]
 /// Registry stuffs for managing almost all parts of in-game components.
 pub mod registry;
+
 pub mod state;
 pub mod text;
 mod util;