diff --git a/Cargo.toml b/Cargo.toml
index 402ff6d..3723f5a 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -45,7 +45,7 @@ bytes = { version = "^1.0", optional = true }
 futures = { version = "^0.3", optional = true }
 http = { version = "0.2", optional = true }
 hyper = { version = "^0.14", optional = true }
-axum-lib = { version = "^0.2", optional = true, package = "axum" }
+axum-lib = { version = "^0.4", optional = true , package="axum"}
 http-body = { version = "^0.4", optional = true }
 poem-lib = { version = "=1.2.34", optional = true, package = "poem" }
 
diff --git a/example-projects/axum-example/Cargo.toml b/example-projects/axum-example/Cargo.toml
index cb6cc09..0eb0e04 100644
--- a/example-projects/axum-example/Cargo.toml
+++ b/example-projects/axum-example/Cargo.toml
@@ -2,11 +2,11 @@
 name = "axum-example"
 version = "0.3.0"
 authors = ["Andrew Webber <andrewvwebber@googlemail.com>"]
-edition = "2018"
+edition = "2021"
 
 [dependencies]
 cloudevents-sdk = { path = "../..", features = ["axum"] }
-axum = "^0.2"
+axum = "^0.4"
 http = "^0.2"
 tokio = { version = "^1", features = ["full"] }
 tracing = "^0.1"
diff --git a/example-projects/axum-example/src/main.rs b/example-projects/axum-example/src/main.rs
index 8caaec2..27a7b9a 100644
--- a/example-projects/axum-example/src/main.rs
+++ b/example-projects/axum-example/src/main.rs
@@ -1,6 +1,5 @@
 use axum::{
-    handler::{get, post},
-    routing::BoxRoute,
+    routing::{get, post},
     Router,
 };
 use cloudevents::Event;
@@ -8,7 +7,7 @@ use http::StatusCode;
 use std::net::SocketAddr;
 use tower_http::trace::TraceLayer;
 
-fn echo_app() -> Router<BoxRoute> {
+fn echo_app() -> Router {
     Router::new()
         .route("/", get(|| async { "hello from cloudevents server" }))
         .route(
@@ -19,7 +18,6 @@ fn echo_app() -> Router<BoxRoute> {
             }),
         )
         .layer(TraceLayer::new_for_http())
-        .boxed()
 }
 
 #[tokio::main]
diff --git a/src/binding/axum/mod.rs b/src/binding/axum/mod.rs
index ad695d3..cb7b8a3 100644
--- a/src/binding/axum/mod.rs
+++ b/src/binding/axum/mod.rs
@@ -8,14 +8,13 @@
 //! ```
 //! use axum_lib as axum;
 //! use axum::{
-//!     handler::{get, post},
-//!     routing::BoxRoute,
+//!     routing::{get, post},
 //!     Router,
 //! };
 //! use cloudevents::Event;
 //! use http::StatusCode;
 //!
-//! fn app() -> Router<BoxRoute> {
+//! fn app() -> Router {
 //!     Router::new()
 //!         .route("/", get(|| async { "hello from cloudevents server" }))
 //!         .route(
@@ -25,7 +24,6 @@
 //!                 (StatusCode::OK, event)
 //!             }),
 //!         )
-//!         .boxed()
 //! }
 //!
 //! ```
@@ -35,15 +33,14 @@
 //! ```
 //! use axum_lib as axum;
 //! use axum::{
-//!     handler::{get, post},
-//!     routing::BoxRoute,
+//!     routing::{get, post},
 //!     Router,
 //! };
 //! use cloudevents::{Event, EventBuilder, EventBuilderV10};
 //! use http::StatusCode;
 //! use serde_json::json;
 //!
-//! fn app() -> Router<BoxRoute> {
+//! fn app() -> Router {
 //!     Router::new()
 //!         .route("/", get(|| async { "hello from cloudevents server" }))
 //!         .route(
@@ -70,7 +67,6 @@
 //!                 Ok::<Event, (StatusCode, String)>(event)
 //!             }),
 //!         )
-//!         .boxed()
 //! }
 //!
 //! ```
@@ -85,9 +81,8 @@ mod tests {
 
     use axum::{
         body::Body,
-        handler::{get, post},
         http::{self, Request, StatusCode},
-        routing::BoxRoute,
+        routing::{get, post},
         Router,
     };
     use chrono::Utc;
@@ -96,7 +91,7 @@ mod tests {
 
     use crate::Event;
 
-    fn echo_app() -> Router<BoxRoute> {
+    fn echo_app() -> Router {
         Router::new()
             .route("/", get(|| async { "hello from cloudevents server" }))
             .route(
@@ -106,7 +101,6 @@ mod tests {
                     (StatusCode::OK, event)
                 }),
             )
-            .boxed()
     }
 
     #[tokio::test]
diff --git a/src/binding/axum/response.rs b/src/binding/axum/response.rs
index 0054534..3f4b956 100644
--- a/src/binding/axum/response.rs
+++ b/src/binding/axum/response.rs
@@ -1,22 +1,27 @@
 use axum_lib as axum;
 
-use axum::{body::Body, http::Response, response::IntoResponse};
+use axum::{
+    body::{boxed, BoxBody},
+    http::Response,
+    response::IntoResponse,
+};
 use http::{header, StatusCode};
+use hyper::body::Body;
 
 use crate::binding::http::builder::adapter::to_response;
 use crate::event::Event;
 
 impl IntoResponse for Event {
-    type Body = Body;
-    type BodyError = <Self::Body as axum::body::HttpBody>::Error;
-
-    fn into_response(self) -> Response<Body> {
+    fn into_response(self) -> Response<BoxBody> {
         match to_response(self) {
-            Ok(resp) => resp,
+            Ok(resp) => {
+                let (parts, body) = resp.into_parts();
+                Response::from_parts(parts, boxed(body))
+            }
             Err(err) => Response::builder()
                 .status(StatusCode::INTERNAL_SERVER_ERROR)
                 .header(header::CONTENT_TYPE, "text/plain")
-                .body(err.to_string().into())
+                .body(boxed(Body::from(err.to_string())))
                 .unwrap(),
         }
     }