diff --git a/schemars/src/lib.rs b/schemars/src/lib.rs
index fa545d9..0aad758 100644
--- a/schemars/src/lib.rs
+++ b/schemars/src/lib.rs
@@ -231,6 +231,8 @@ pub mod gen;
 /// JSON Schema types.
 pub mod schema;
 
+#[cfg(feature = "schemars_derive")]
+extern crate schemars_derive;
 #[cfg(feature = "schemars_derive")]
 pub use schemars_derive::*;