diff --git a/README.md b/README.md
index 29335ec..82ae1dd 100644
--- a/README.md
+++ b/README.md
@@ -23,7 +23,7 @@ function then returns the value produced by that other server.
 Add to your `Cargo.toml` dependencies:
 
 ```toml
-tarpc = "0.4.0"
+tarpc = "0.5.0"
 ```
 
 ## Example
diff --git a/RELEASES.md b/RELEASES.md
index f42ec98..bc366cd 100644
--- a/RELEASES.md
+++ b/RELEASES.md
@@ -1,3 +1,11 @@
+## 0.5 (2016-04-24)
+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:
+
+* Tcp, for types `impl`ing `ToSocketAddrs`.
+* Unix sockets via the `UnixTransport` type.
+
 ## 0.4 (2016-04-02)
 
 ### Breaking Changes
diff --git a/tarpc/Cargo.toml b/tarpc/Cargo.toml
index 8658713..2545fa0 100644
--- a/tarpc/Cargo.toml
+++ b/tarpc/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "tarpc"
-version = "0.4.0"
+version = "0.5.0"
 authors = ["Adam Wright <adam.austin.wright@gmail.com>", "Tim Kuehn <timothy.j.kuehn@gmail.com>"]
 license = "MIT"
 documentation = "https://google.github.io/tarpc"