diff --git a/RELEASING.md b/RELEASING.md
index 83d7cbc0..d2eb9b04 100644
--- a/RELEASING.md
+++ b/RELEASING.md
@@ -3,7 +3,7 @@
 ## Checklist
 
 1. Determine which package(s) you're releasing.
-2. Determine the package's next version.
+2. Determine the package's next version. [cargo-semver-checks](https://github.com/obi1kenobi/cargo-semver-checks) is a handy tool for this.
 3. Create a release branch named `release/{package name}-{version}`, e.g. `release/stac-v1.2.3`.
 4. Update the package's `Cargo.toml` file accordingly, and update the other packages' `Cargo.toml` if they depend on this package.
 5. Scan the package's README for references to version numbers, and update any that are needed.
diff --git a/api/CHANGELOG.md b/api/CHANGELOG.md
index 745b2999..9d0ead51 100644
--- a/api/CHANGELOG.md
+++ b/api/CHANGELOG.md
@@ -6,11 +6,17 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 
 ## [Unreleased]
 
+## [0.6.0] - 2024-09-19
+
 ### Added
 
 - `Client` (from now-defunkt **stac-async**) ([#372](https://github.com/stac-utils/stac-rs/pull/372))
 - `BlockingClient` ([#387](https://github.com/stac-utils/stac-rs/pull/387))
 
+### Changed
+
+- `Collections` and `Items` now have private attributes ([#407](https://github.com/stac-utils/stac-rs/pull/407))
+
 ## [0.5.0] - 2024-09-05
 
 ### Added
@@ -117,7 +123,8 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 
 Initial release
 
-[unreleased]: https://github.com/stac-utils/stac-rs/compare/stac-api-v0.5.0...main
+[unreleased]: https://github.com/stac-utils/stac-rs/compare/stac-api-v0.6.0...main
+[0.6.0]: https://github.com/stac-utils/stac-rs/compare/stac-api-v0.5.0...stac-api-v0.6.0
 [0.5.0]: https://github.com/stac-utils/stac-rs/compare/stac-api-v0.4.1...stac-api-v0.5.0
 [0.4.1]: https://github.com/stac-utils/stac-rs/compare/stac-api-v0.4.0...stac-api-v0.4.1
 [0.4.0]: https://github.com/stac-utils/stac-rs/compare/stac-api-v0.3.3...stac-api-v0.4.0
diff --git a/api/Cargo.toml b/api/Cargo.toml
index 2e9c1813..baaf2d12 100644
--- a/api/Cargo.toml
+++ b/api/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "stac-api"
-version = "0.5.0"
+version = "0.6.0"
 authors = ["Pete Gadomski <pete.gadomski@gmail.com>"]
 edition = "2021"
 description = "Rust library for the SpatioTemporal Asset Catalog (STAC) API specification"
@@ -31,7 +31,7 @@ geojson = "0.24"
 serde = "1"
 serde_json = "1"
 serde_urlencoded = "0.7"
-stac = { version = "0.9.0", path = "../core" }
+stac = { version = "0.10.0", path = "../core" }
 thiserror = "1"
 tokio = { version = "1.23", optional = true }
 url = "2.3"
diff --git a/api/README.md b/api/README.md
index 584dd744..4564eaae 100644
--- a/api/README.md
+++ b/api/README.md
@@ -16,7 +16,7 @@ To use the library in your project:
 
 ```toml
 [dependencies]
-stac-api = "0.5"
+stac-api = "0.6"
 ```
 
 **stac-api** has one optional feature.
@@ -24,7 +24,7 @@ stac-api = "0.5"
 
 ```toml
 [dependencies]
-stac-api = { version = "0.5", features = ["geo"] }
+stac-api = { version = "0.6", features = ["geo"] }
 ```
 
 ## Examples
diff --git a/cli/CHANGELOG.md b/cli/CHANGELOG.md
index 85ecc1fb..9b600121 100644
--- a/cli/CHANGELOG.md
+++ b/cli/CHANGELOG.md
@@ -7,6 +7,8 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 
 ## [Unreleased]
 
+## [0.4.0] - 2024-09-19
+
 ### Added
 
 - Outfile and stream arguments to `items` ([#363](https://github.com/stac-utils/stac-rs/pull/363))
@@ -97,7 +99,8 @@ Moved over from [stac-incubator-rs](https://github.com/gadomski/stac-incubator-r
 - Downloading ([#142](https://github.com/stac-utils/stac-rs/pull/142), [#152](https://github.com/stac-utils/stac-rs/pull/152))
 - Validation ([#155](https://github.com/stac-utils/stac-rs/pull/155))
 
-[Unreleased]: https://github.com/stac-utils/stac-rs/compare/stac-cli-v0.3.1..main
+[Unreleased]: https://github.com/stac-utils/stac-rs/compare/stac-cli-v0.4.0..main
+[0.4.0]: https://github.com/stac-utils/stac-rs/compare/stac-cli-v0.3.1..stac-cli-v0.4.0
 [0.3.1]: https://github.com/stac-utils/stac-rs/compare/stac-cli-v0.3.0..stac-cli-v0.3.1
 [0.3.0]: https://github.com/stac-utils/stac-rs/compare/stac-cli-v0.2.0..stac-cli-v0.3.0
 [0.2.0]: https://github.com/stac-utils/stac-rs/compare/stac-cli-v0.1.0..stac-cli-v0.2.0
diff --git a/cli/Cargo.toml b/cli/Cargo.toml
index a794900f..bd6d2b31 100644
--- a/cli/Cargo.toml
+++ b/cli/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "stac-cli"
-version = "0.3.1"
+version = "0.4.0"
 edition = "2021"
 description = "Command line interface for stac-rs"
 documentation = "https://docs.rs/stac-cli"
@@ -28,15 +28,15 @@ pyo3 = { version = "0.22", optional = true }
 reqwest = "0.12"
 serde = "1"
 serde_json = "1"
-stac = { version = "0.9.0", path = "../core", features = [
+stac = { version = "0.10.0", path = "../core", features = [
     "geoparquet-compression",
     "object-store-all",
     "reqwest",
 ] }
-stac-api = { version = "0.5.0", path = "../api", features = ["client"] }
+stac-api = { version = "0.6.0", path = "../api", features = ["client"] }
 stac-duckdb = { version = "0.0.1", path = "../duckdb", optional = true }
 stac-server = { version = "0.3.0", path = "../server", features = ["axum"] }
-stac-validate = { version = "0.2.2", path = "../validate" }
+stac-validate = { version = "0.3.0", path = "../validate" }
 thiserror = "1"
 tokio = { version = "1.23", features = [
     "macros",
diff --git a/core/CHANGELOG.md b/core/CHANGELOG.md
index e61b8ad0..9736c832 100644
--- a/core/CHANGELOG.md
+++ b/core/CHANGELOG.md
@@ -6,6 +6,8 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 
 ## [Unreleased]
 
+## [0.10.0] - 2024-09-19
+
 ### Added
 
 - Deref `ItemCollection` ([#363](https://github.com/stac-utils/stac-rs/pull/363))
@@ -372,7 +374,8 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 
 Initial release.
 
-[Unreleased]: https://github.com/stac-utils/stac-rs/compare/stac-v0.9.0...main
+[Unreleased]: https://github.com/stac-utils/stac-rs/compare/stac-v0.10.0...main
+[0.10.0]: https://github.com/stac-utils/stac-rs/compare/stac-v0.9.0...stac-v0.10.0
 [0.9.0]: https://github.com/stac-utils/stac-rs/compare/stac-v0.8.0...stac-v0.9.0
 [0.8.0]: https://github.com/stac-utils/stac-rs/compare/stac-v0.7.2...stac-v0.8.0
 [0.7.2]: https://github.com/stac-utils/stac-rs/compare/stac-v0.7.1...stac-v0.7.2
diff --git a/core/Cargo.toml b/core/Cargo.toml
index 4976fae1..3e394aa3 100644
--- a/core/Cargo.toml
+++ b/core/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "stac"
-version = "0.9.0"
+version = "0.10.0"
 authors = ["Pete Gadomski <pete.gadomski@gmail.com>"]
 edition = "2021"
 description = "Rust library for the SpatioTemporal Asset Catalog (STAC) specification"
diff --git a/core/README.md b/core/README.md
index e002afc5..d9548a36 100644
--- a/core/README.md
+++ b/core/README.md
@@ -14,7 +14,7 @@ To use the library in your project:
 
 ```toml
 [dependencies]
-stac = "0.9"
+stac = "0.10"
 ```
 
 ## Examples
diff --git a/duckdb/Cargo.toml b/duckdb/Cargo.toml
index bc3f0aeb..52c6a6c3 100644
--- a/duckdb/Cargo.toml
+++ b/duckdb/Cargo.toml
@@ -15,8 +15,8 @@ arrow = "52"
 duckdb = "1.0"
 geoarrow = { version = "0.3" }
 parquet = "52"
-stac = { version = "0.9.0", path = "../core", features = ["geoarrow"] }
-stac-api = { version = "0.5.0", path = "../api" }
+stac = { version = "0.10.0", path = "../core", features = ["geoarrow"] }
+stac-api = { version = "0.6.0", path = "../api" }
 thiserror = "1"
 
 [dev-dependencies]
diff --git a/pgstac/Cargo.toml b/pgstac/Cargo.toml
index 570984e6..390d0df1 100644
--- a/pgstac/Cargo.toml
+++ b/pgstac/Cargo.toml
@@ -21,8 +21,8 @@ rustls = { version = "0.23", optional = true, features = [
 ], default-features = false }
 serde = "1"
 serde_json = "1"
-stac = { version = "0.9.0", path = "../core" }
-stac-api = { version = "0.5.0", path = "../api" }
+stac = { version = "0.10.0", path = "../core" }
+stac-api = { version = "0.6.0", path = "../api" }
 thiserror = "1"
 tokio-postgres = { version = "0.7", features = ["with-serde_json-1"] }
 tokio-postgres-rustls = { version = "0.12", optional = true }
diff --git a/server/Cargo.toml b/server/Cargo.toml
index 965de814..5abf4a8c 100644
--- a/server/Cargo.toml
+++ b/server/Cargo.toml
@@ -28,8 +28,8 @@ pgstac = { version = "0.2.0", path = "../pgstac", features = [
 serde = "1"
 serde_json = "1"
 serde_urlencoded = "0.7"
-stac = { version = "0.9.0", path = "../core" }
-stac-api = { version = "0.5.0", path = "../api", features = ["geo"] }
+stac = { version = "0.10.0", path = "../core" }
+stac-api = { version = "0.6.0", path = "../api", features = ["geo"] }
 thiserror = "1"
 tokio-postgres = { version = "0.7", optional = true }
 tower-http = { version = "0.5", features = ["cors"], optional = true }
@@ -37,7 +37,7 @@ url = "2"
 
 [dev-dependencies]
 serde_json = "1"
-stac-validate = { version = "0.2", path = "../validate" }
+stac-validate = { version = "0.3", path = "../validate" }
 tokio = { version = "1.37", features = ["macros"] }
 tokio-test = "0.4"
 tower = { version = "0.5", features = ["util"] }
diff --git a/validate/CHANGELOG.md b/validate/CHANGELOG.md
index e2979164..0d3c1147 100644
--- a/validate/CHANGELOG.md
+++ b/validate/CHANGELOG.md
@@ -6,6 +6,8 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 
 ## [Unreleased]
 
+## [0.3.0] - 2024-09-19
+
 ### Added
 
 - STAC v1.1.0 schemas ([#399](https://github.com/stac-utils/stac-rs/pull/399))
@@ -57,7 +59,8 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 
 Initial release.
 
-[Unreleased]: https://github.com/stac-utils/stac-rs/compare/stac-validate-v0.2.2...main
+[Unreleased]: https://github.com/stac-utils/stac-rs/compare/stac-validate-v0.3.0...main
+[0.3.0]: https://github.com/stac-utils/stac-rs/compare/stac-validate-v0.2.2..stac-validate-v0.3.0
 [0.2.2]: https://github.com/stac-utils/stac-rs/compare/stac-validate-v0.2.1..stac-validate-v0.2.2
 [0.2.1]: https://github.com/stac-utils/stac-rs/compare/stac-validate-v0.2.0..stac-validate-v0.2.1
 [0.2.0]: https://github.com/stac-utils/stac-rs/compare/stac-validate-v0.1.2..stac-validate-v0.2.0
diff --git a/validate/Cargo.toml b/validate/Cargo.toml
index 3a7965e9..908f02ee 100644
--- a/validate/Cargo.toml
+++ b/validate/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "stac-validate"
-version = "0.2.2"
+version = "0.3.0"
 authors = ["Pete Gadomski <pete.gadomski@gmail.com>"]
 edition = "2021"
 description = "Validate STAC objects with jsonschema"
@@ -18,7 +18,7 @@ jsonschema = "0.20"
 reqwest = { version = "0.12", features = ["blocking", "json"] }
 serde = "1"
 serde_json = "1"
-stac = { version = "0.9.0", path = "../core" }
+stac = { version = "0.10.0", path = "../core" }
 thiserror = "1"
 tokio = "1"
 tracing = "0.1"
@@ -26,7 +26,7 @@ url = "2"
 
 [dev-dependencies]
 geojson = "0.24"
-stac = { version = "0.9.0", path = "../core", features = ["geo"] }
+stac = { version = "0.10.0", path = "../core", features = ["geo"] }
 rstest = "0.22"
 tokio = { version = "1", features = ["macros"] }
 tokio-test = "0.4"
diff --git a/validate/README.md b/validate/README.md
index 03eec02f..bddb4f0a 100644
--- a/validate/README.md
+++ b/validate/README.md
@@ -14,7 +14,7 @@ To use the library in your project:
 
 ```toml
 [dependencies]
-stac-validate = "0.2"
+stac-validate = "0.3"
 ```
 
 ## Examples