diff --git a/swarm/CHANGELOG.md b/swarm/CHANGELOG.md
index 6c4bb389..159c61af 100644
--- a/swarm/CHANGELOG.md
+++ b/swarm/CHANGELOG.md
@@ -47,17 +47,21 @@
 
 - Rename `NetworkBehaviour::OutEvent` to `NetworkBehaviour::ToSwarm`, `ConnectionHandler::InEvent` to `ConnectionHandler::FromBehaviour`, `ConnectionHandler::OutEvent` to `ConnectionHandler::ToBehaviour`. See [PR 3848].
 
+- Remove deprecated `NetworkBehaviourAction` type.
+  See [PR 3919].
+
 [PR 3605]: https://github.com/libp2p/rust-libp2p/pull/3605
 [PR 3651]: https://github.com/libp2p/rust-libp2p/pull/3651
 [PR 3715]: https://github.com/libp2p/rust-libp2p/pull/3715
 [PR 3746]: https://github.com/libp2p/rust-libp2p/pull/3746
+[PR 3848]: https://github.com/libp2p/rust-libp2p/pull/3848
 [PR 3865]: https://github.com/libp2p/rust-libp2p/pull/3865
 [PR 3882]: https://github.com/libp2p/rust-libp2p/pull/3882
 [PR 3884]: https://github.com/libp2p/rust-libp2p/pull/3884
 [PR 3885]: https://github.com/libp2p/rust-libp2p/pull/3885
 [PR 3886]: https://github.com/libp2p/rust-libp2p/pull/3886
 [PR 3912]: https://github.com/libp2p/rust-libp2p/pull/3912
-[PR 3848]: https://github.com/libp2p/rust-libp2p/pull/3848
+[PR 3919]: https://github.com/libp2p/rust-libp2p/pull/3919
 
 ## 0.42.2
 
diff --git a/swarm/src/behaviour.rs b/swarm/src/behaviour.rs
index e35f412f..c5e5b7f2 100644
--- a/swarm/src/behaviour.rs
+++ b/swarm/src/behaviour.rs
@@ -257,9 +257,6 @@ pub trait PollParameters {
     fn local_peer_id(&self) -> &PeerId;
 }
 
-#[deprecated(note = "Use `ToSwarm` instead.")]
-pub type NetworkBehaviourAction<TOutEvent, TInEvent> = ToSwarm<TOutEvent, TInEvent>;
-
 /// A command issued from a [`NetworkBehaviour`] for the [`Swarm`].
 ///
 /// [`Swarm`]: super::Swarm
diff --git a/swarm/src/lib.rs b/swarm/src/lib.rs
index 16dd9511..f0f5f07c 100644
--- a/swarm/src/lib.rs
+++ b/swarm/src/lib.rs
@@ -92,8 +92,6 @@ pub mod derive_prelude {
     pub use crate::ConnectionHandlerSelect;
     pub use crate::DialError;
     pub use crate::NetworkBehaviour;
-    #[allow(deprecated)]
-    pub use crate::NetworkBehaviourAction;
     pub use crate::PollParameters;
     pub use crate::THandler;
     pub use crate::THandlerInEvent;
@@ -108,8 +106,6 @@ pub mod derive_prelude {
     pub use libp2p_identity::PeerId;
 }
 
-#[allow(deprecated)]
-pub use behaviour::NetworkBehaviourAction;
 pub use behaviour::{
     AddressChange, CloseConnection, ConnectionClosed, DialFailure, ExpiredExternalAddr,
     ExpiredListenAddr, ExternalAddresses, FromSwarm, ListenAddresses, ListenFailure,