diff --git a/async_db/src/main.rs b/async_db/src/main.rs
index cd66d3f..fc3d910 100644
--- a/async_db/src/main.rs
+++ b/async_db/src/main.rs
@@ -81,12 +81,14 @@ fn main() -> io::Result<()> {
             .state(pool.clone())
             // enable logger
             // .middleware(middleware::Logger::default())
-            .resource("/asyncio_weather", |r| {
-                r.route(web::get().to_async(asyncio_weather))
-            })
-            .resource("/parallel_weather", |r| {
-                r.route(web::get().to_async(parallel_weather))
-            })
+            .service(
+                web::resource("/asyncio_weather")
+                    .route(web::get().to_async(asyncio_weather)),
+            )
+            .service(
+                web::resource("/parallel_weather")
+                    .route(web::get().to_async(parallel_weather)),
+            )
     })
     .bind("127.0.0.1:8080")?
     .start();
diff --git a/basics/src/main.rs b/basics/src/main.rs
index 344ff49..ccd73b0 100644
--- a/basics/src/main.rs
+++ b/basics/src/main.rs
@@ -83,45 +83,42 @@ fn main() -> io::Result<()> {
             // cookie session middleware
             .middleware(CookieSession::signed(&[0; 32]).secure(false))
             // register favicon
-            .resource("/favicon", |r| r.to(favicon))
+            .service(web::resource("/favicon").to(favicon))
             // register simple route, handle all methods
-            .resource("/welcome", |r| r.to(welcome))
+            .service(web::resource("/welcome").to(welcome))
             // with path parameters
-            .resource("/user/{name}", |r| r.route(web::get().to(with_param)))
+            .service(web::resource("/user/{name}").route(web::get().to(with_param)))
             // async handler
-            .resource("/async/{name}", |r| {
-                r.route(web::get().to_async(index_async))
-            })
+            .service(
+                web::resource("/async/{name}").route(web::get().to_async(index_async)),
+            )
             // async handler
-            .resource("/async-body/{name}", |r| {
-                r.route(web::get().to(index_async_body))
-            })
-            .resource("/test", |r| {
-                r.to(|req: HttpRequest| match *req.method() {
+            .service(
+                web::resource("/async-body/{name}")
+                    .route(web::get().to(index_async_body)),
+            )
+            .service(
+                web::resource("/test").to(|req: HttpRequest| match *req.method() {
                     Method::GET => HttpResponse::Ok(),
                     Method::POST => HttpResponse::MethodNotAllowed(),
                     _ => HttpResponse::NotFound(),
-                })
-            })
-            .resource("/error", |r| {
-                r.to(|| {
-                    error::InternalError::new(
-                        io::Error::new(io::ErrorKind::Other, "test"),
-                        StatusCode::INTERNAL_SERVER_ERROR,
-                    )
-                })
-            })
+                }),
+            )
+            .service(web::resource("/error").to(|| {
+                error::InternalError::new(
+                    io::Error::new(io::ErrorKind::Other, "test"),
+                    StatusCode::INTERNAL_SERVER_ERROR,
+                )
+            }))
             // static files
             .service(fs::StaticFiles::new("/static", "static").show_files_listing())
             // redirect
-            .resource("/", |r| {
-                r.route(web::get().to(|req: HttpRequest| {
-                    println!("{:?}", req);
-                    HttpResponse::Found()
-                        .header(header::LOCATION, "static/welcome.html")
-                        .finish()
-                }))
-            })
+            .service(web::resource("/").route(web::get().to(|req: HttpRequest| {
+                println!("{:?}", req);
+                HttpResponse::Found()
+                    .header(header::LOCATION, "static/welcome.html")
+                    .finish()
+            })))
             // default
             .default_resource(|r| {
                 // 404 for GET request
diff --git a/r2d2/src/main.rs b/r2d2/src/main.rs
index 05d0784..abe564d 100644
--- a/r2d2/src/main.rs
+++ b/r2d2/src/main.rs
@@ -48,7 +48,7 @@ fn main() -> io::Result<()> {
     HttpServer::new(move || {
         App::new()
             .state(pool.clone()) // <- store db pool in app state
-            .resource("/{name}", |r| r.route(web::get().to_async(index)))
+            .route("/{name}", web::get().to_async(index))
     })
     .bind("127.0.0.1:8080")?
     .start();