diff --git a/Cargo.toml b/Cargo.toml
index 4b34f4cb1..f60542a70 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -16,7 +16,7 @@ keywords = ["http", "actix-web", "tracing", "logging"]
 categories = ["asynchronous", "web-programming"]
 
 [dependencies]
-actix-web = "3"
+actix-web = "4.0.0-beta.1"
 tracing = "0.1.19"
 tracing-futures = "0.2.4"
 futures = "0.3.5"
diff --git a/src/lib.rs b/src/lib.rs
index c091139cd..b39d1a7e7 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -89,13 +89,12 @@ use uuid::Uuid;
 /// [`tracing`]: https://docs.rs/tracing
 pub struct TracingLogger;
 
-impl<S, B> Transform<S> for TracingLogger
+impl<S, B> Transform<S, ServiceRequest> for TracingLogger
 where
-    S: Service<Request = ServiceRequest, Response = ServiceResponse<B>, Error = Error>,
+    S: Service<ServiceRequest, Response = ServiceResponse<B>, Error = Error>,
     S::Future: 'static,
     B: 'static,
 {
-    type Request = ServiceRequest;
     type Response = ServiceResponse<B>;
     type Error = Error;
     type Transform = TracingLoggerMiddleware<S>;
@@ -158,13 +157,12 @@ impl std::fmt::Display for RequestId {
     }
 }
 
-impl<S, B> Service for TracingLoggerMiddleware<S>
+impl<S, B> Service<ServiceRequest> for TracingLoggerMiddleware<S>
 where
-    S: Service<Request = ServiceRequest, Response = ServiceResponse<B>, Error = Error>,
+    S: Service<ServiceRequest, Response = ServiceResponse<B>, Error = Error>,
     S::Future: 'static,
     B: 'static,
 {
-    type Request = ServiceRequest;
     type Response = ServiceResponse<B>;
     type Error = Error;
     type Future = Pin<Box<dyn Future<Output = Result<Self::Response, Self::Error>>>>;