diff --git a/src/lib.rs b/src/lib.rs
index d51005cfe..f1a074955 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -129,7 +129,7 @@ pub mod dev {
 
     pub use crate::config::{AppConfig, AppService};
     #[doc(hidden)]
-    pub use crate::handler::Factory;
+    pub use crate::handler::{Factory, Handler};
     pub use crate::info::ConnectionInfo;
     pub use crate::rmap::ResourceMap;
     pub use crate::service::{