elastio · Veetaha · Aug 25, 2026 · Aug 25, 2026 · Aug 25, 2026 · Aug 25, 2026
diff --git a/Cargo.lock b/Cargo.lock
diff --git a/README.md b/README.md
@@ -199,7 +199,7 @@ Add `bon` to your `Cargo.toml`.
 
 ```toml
 [dependencies]
-bon = "3.9"
+bon = "3.10"
 ```
 
 You can opt out of `std` and `alloc` cargo features with `default-features = false` for `no_std` environments.

diff --git a/bon-macros/Cargo.toml b/bon-macros/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name    = "bon-macros"
-version = "3.9.3"
+version = "3.10.0"
 
 description = """
 This is a proc-macro crate that is supposed to be a private implementation

diff --git a/bon-sandbox/Cargo.toml b/bon-sandbox/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name    = "bon-sandbox"
-version = "3.9.3"
+version = "3.10.0"
 
 description = """
   Not a real crate! It's just a showcase of examples used by `bon`'s documentation
@@ -36,4 +36,4 @@ typed-builder  = "0.23"
 [dependencies.bon]
 features = ["experimental-overwritable", "experimental-generics-setters"]
 path     = "../bon"
-version  = "=3.9.3"
+version  = "=3.10.0"
diff --git a/bon/Cargo.toml b/bon/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name    = "bon"
-version = "3.9.3"
+version = "3.10.0"
 
 description = "Next-gen compile-time-checked builder generator, named function's arguments, and more!"
 
@@ -39,7 +39,7 @@ workspace = true
 # The version of the macro crate is pinned to a specific one because the code
 # generated by the macros uses private APIs from the runtime crate that are not
 # guarded by semver.
-bon-macros = { path = "../bon-macros", version = "=3.9.3" }
+bon-macros = { path = "../bon-macros", version = "=3.10.0" }
 
 [dev-dependencies]
 expect-test           = "1.4.1"

diff --git a/scripts/sync-version.sh b/scripts/sync-version.sh
@@ -8,6 +8,3 @@ echo "Setting version $version"
 
 sed -i "s/bon = \".*\"/bon = \"$version\"/" \
     README.md
-
-sed -i "s/bon = { version = \"[^\"]*\"/bon = { version = \"$version\"/" \
-    website/src/guide/typestate-api/custom-methods.md
diff --git a/website/src/changelog.md b/website/src/changelog.md
@@ -5,6 +5,29 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [3.10.0](https://github.com/elastio/bon/compare/v3.9.3...v3.10.0) - 2026-08-25
+
+### MSRV Update Notice
+
+This release raises the minimum supported Rust version from `1.59.0` to `1.88.0`. If you are on an older compiler, stay on `bon@3.9`.
+
+The new MSRV also comes with the deprecation of the `implied-bounds` cargo feature. Implied bounds are now added by default without any feature gate, so be sure to remove that feature from your `Cargo.toml` if you have it enabled. It's currently a no-op, and it won't be removed until a major release, for which there are no plans yet.
+
+The MSRV bump comes from the `darling@0.24` update, which is the first version that uses `syn@3.0`.
+
+### Added
+
+- Support the `default` switch in the [`on(...)`](https://bon-rs.com/reference/builder/top-level/on) clause ([#398](https://github.com/elastio/bon/pull/398)). Thanks [@ChrisJr404](https://github.com/ChrisJr404) for the contribution!
+
+### Changed
+
+- Bump MSRV to `1.88.0`, move to the 2024 edition, update to `syn@3.0` and `darling@0.24` ([#399](https://github.com/elastio/bon/pull/399))
+- Deprecate the `implied-bounds` cargo feature. Implied bounds are now generated by default ([#399](https://github.com/elastio/bon/pull/399))
+
+### Internal
+
+- Regular maintenance ([#392](https://github.com/elastio/bon/pull/392))
+
 ## [3.9.3](https://github.com/elastio/bon/compare/v3.9.2...v3.9.3) - 2026-06-15
 
 ### Fixed