diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1c8de7c21..424fed538 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,8 @@
-# unreleased (0.10.0)
+# 0.10.0-alpha
 
-- [Implement `std::error::Error::source` for error type](https://github.com/rust-bitcoin/rust-bech32/pull/72)
+This release introduces a new `primitives` module that is basically a new implementation of the
+whole crate. We also add a `segwit` module but we have not yet settled on the exact new API in
+`lib.rs`, hence the `alpha` release.
 
 # 0.9.1
 
@@ -10,4 +12,4 @@
 # 0.9.0
 
 - [Enable edition 2018](https://github.com/rust-bitcoin/rust-bech32/pull/57) bumping MSRV to 1.41.1
-- [Implement `From<u5> for u8`](https://github.com/rust-bitcoin/rust-bech32/pull/58)
\ No newline at end of file
+- [Implement `From<u5> for u8`](https://github.com/rust-bitcoin/rust-bech32/pull/58)
diff --git a/Cargo.toml b/Cargo.toml
index 706ff9447..2465c2a94 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "bech32"
-version = "0.9.1"
+version = "0.10.0-alpha"
 authors = ["Clark Moody", "Andrew Poelstra", "Tobin Harding", "The rust-bitcoin developers"]
 repository = "https://github.com/rust-bitcoin/rust-bech32"
 documentation = "https://docs.rs/bech32/"