diff --git a/RELEASES.md b/RELEASES.md
index bc366cd5..02446beb 100644
--- a/RELEASES.md
+++ b/RELEASES.md
@@ -1,4 +1,6 @@
 ## 0.5 (2016-04-24)
+
+### Breaking Changes
 0.5 adds support for arbitrary transports via the
 [`Transport`](tarpc/src/transport/mod.rs#L7) trait.
 Out of the box tarpc provides implementations for:
@@ -6,6 +8,9 @@ Out of the box tarpc provides implementations for:
 * Tcp, for types `impl`ing `ToSocketAddrs`.
 * Unix sockets via the `UnixTransport` type.
 
+This was a breaking change: `handler.local_addr()` was renamed
+`handler.dialer()`.
+
 ## 0.4 (2016-04-02)
 
 ### Breaking Changes
diff --git a/tarpc/src/transport/tcp.rs b/tarpc/src/transport/tcp.rs
index 2a78b657..09ddf948 100644
--- a/tarpc/src/transport/tcp.rs
+++ b/tarpc/src/transport/tcp.rs
@@ -3,6 +3,7 @@ use std::net::{SocketAddr, TcpListener, TcpStream, ToSocketAddrs};
 use std::time::Duration;
 
 /// A transport for TCP.
+#[derive(Debug)]
 pub struct TcpTransport<A: ToSocketAddrs>(pub A);
 
 impl<A: ToSocketAddrs> super::Transport for TcpTransport<A> {
@@ -54,6 +55,7 @@ impl super::Stream for TcpStream {
 }
 
 /// Connects to a socket address.
+#[derive(Debug)]
 pub struct TcpDialer<A = SocketAddr>(pub A) where A: ToSocketAddrs;
 
 impl<A> super::Dialer for TcpDialer<A>
diff --git a/tarpc/src/transport/unix.rs b/tarpc/src/transport/unix.rs
index 9a4b5901..c83dd704 100644
--- a/tarpc/src/transport/unix.rs
+++ b/tarpc/src/transport/unix.rs
@@ -4,6 +4,7 @@ use std::time::Duration;
 use unix_socket::{UnixListener, UnixStream};
 
 /// A transport for unix sockets.
+#[derive(Debug)]
 pub struct UnixTransport<P>(pub P) where P: AsRef<Path>;
 
 impl<P> super::Transport for UnixTransport<P>
@@ -17,6 +18,7 @@ impl<P> super::Transport for UnixTransport<P>
 }
 
 /// Connects to a unix socket address.
+#[derive(Debug)]
 pub struct UnixDialer<P>(pub P) where P: AsRef<Path>;
 
 impl<P> super::Dialer for UnixDialer<P>