bitcoind: Bump version to 0.40.0

In preparation for release add a changelog entry, bump the version,
and update the lock files.

Author: tcharding

Cargo-minimal.lock

@@ -150,7 +150,7 @@ dependencies = [
 
 [[package]]
 name = "bitcoind"
-version = "0.39.0"
+version = "0.40.0"
 dependencies = [
  "anyhow",
  "bitcoin_hashes",

Cargo-recent.lock

@@ -150,7 +150,7 @@ dependencies = [
 
 [[package]]
 name = "bitcoind"
-version = "0.39.0"
+version = "0.40.0"
 dependencies = [
  "anyhow",
  "bitcoin_hashes",

bitcoind/CHANGELOG.md

@@ -1,3 +1,12 @@
+# 0.40.0 - 2026-05-26
+
+- Add initial support for Bitcoin Core v31 [#598](https://github.com/rust-bitcoin/corepc/pull/598)
+- Upgrade to latest version of `corepc-types` and `corepc-client`
+
+In this release we remove support for Bitcoin Core `v27.0`, `v27.1`,
+`v28.0`, and `v28.1`. We still support the latest point release of
+these two versions: `v27.2` and `v28.2`.
+
 # 0.39.0 - 2026-05-12
 
 - Update to use latest `corepc-client v0.14.0`.

bitcoind/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "bitcoind"
-version = "0.39.0"
+version = "0.40.0"
 authors = ["Riccardo Casatta <riccardo@casatta.it>", "Tobin C. Harding <me@tobin.cc>"]
 license = "MIT"
 repository = "https://github.com/rust-bitcoin/corepc"

electrsd/Cargo.toml

@@ -12,7 +12,7 @@ categories = ["cryptography::cryptocurrencies", "development-tools::testing"]
 exclude = ["tests", "contrib"]
 
 [dependencies]
-bitcoind = { version = "0.39.0", path = "../bitcoind" }
+bitcoind = { version = "0.40.0", path = "../bitcoind" }
 corepc-client = { version = "0.15.0", path = "../client" }
 electrum-client = { version = "0.24.0", default-features = false }
 log = { version = "0.4" }

integration_test/Cargo.toml

@@ -60,7 +60,7 @@ TODO = []                       # This is a dirty hack while writing the tests.
 [dependencies]
 bitcoin = { version = "0.32.0", default-features = false, features = ["std", "serde"] }
 env_logger = "0.9.0"
-bitcoind = { package = "bitcoind", version = "0.39.0", path = "../bitcoind", default-features = false }
+bitcoind = { package = "bitcoind", version = "0.40.0", path = "../bitcoind", default-features = false }
 rand = "0.8.5"
 # Just so we can enable the feature.
 types = { package = "corepc-types", version = "0.14.0", path = "../types", features = ["serde-deny-unknown-fields"] }