diff --git a/CHANGELOG.md b/CHANGELOG.md
index 00626e1..874fd2d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,23 @@ All notable changes to the Rust Apify API client are documented here. The format
 based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/) and the project adheres
 to [Semantic Versioning](https://semver.org/).
 
+## [0.4.5] - 2026-07-03
+
+### Changed
+- Bumped `API_SPEC_VERSION` to `v2-2026-07-02T131926Z`.
+- Bumped crate version to `0.4.5`.
+
+### Documentation
+- Added `chrono` to the extra-dependency install instructions.
+- Expanded the `DatasetListItemsOptions`/`DatasetDownloadOptions` and `ActorBuildOptions` field lists into per-field descriptions, and corrected the `output_fields` description.
+- Removed a stray `get_statistics` bullet from the request-queue return-types list.
+
+## [0.4.4] - 2026-07-01
+
+### Changed
+- Bumped `API_SPEC_VERSION` to `v2-2026-07-01T115402Z`.
+- Bumped crate version to `0.4.4`.
+
 ## [0.4.3] - 2026-06-30
 
 ### Changed
diff --git a/Cargo.toml b/Cargo.toml
index f031c78..a4c0279 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "apify-client"
-version = "0.4.3"
+version = "0.4.5"
 authors = ["Apify Technologies <support@apify.com>"]
 description = "An official, but experimental, AI-generated and AI-maintained Rust client for the Apify API (https://apify.com)."
 license = "Apache-2.0"
diff --git a/README.md b/README.md
index 0ad7f2e..5482b3e 100644
--- a/README.md
+++ b/README.md
@@ -32,6 +32,11 @@ project needs `serde_json`. Two more dependencies are needed only for specific f
 - `futures-util = "0.3"` — to consume `LogClient::stream()` (log streaming/redirection); it
   provides the `StreamExt` trait used by the [`log_redirection`](examples/log_redirection.rs)
   example. See [`docs/misc.md`](docs/misc.md#logs--clientlogbuild_or_run_id).
+- `chrono = "0.4"` — only if you construct or read timestamp values yourself. Model timestamp
+  fields (e.g. `Actor::created_at`, `ActorRun::started_at`) are typed as `chrono::DateTime<Utc>`
+  and `chrono` is **not** re-exported, so snippets that call `chrono::Utc::now()` (e.g. the
+  `monthly_usage` example in [`docs/misc.md`](docs/misc.md#logs--clientlogbuild_or_run_id) and the
+  account example) need it as a direct dependency.
 
 By default the client uses the system TLS (`native-tls`). To use rustls instead:
 
diff --git a/docs/README.md b/docs/README.md
index 2059beb..2a2691a 100644
--- a/docs/README.md
+++ b/docs/README.md
@@ -34,9 +34,12 @@ tokio = { version = "1", features = ["macros", "rt-multi-thread"] }
 ```
 
 Some snippets and examples need extra crates: add `serde_json = "1"` when you read
-dynamically-typed responses as `serde_json::Value` (as the README Quick start does), and
+dynamically-typed responses as `serde_json::Value` (as the README Quick start does),
 `futures-util = "0.3"` to consume `LogClient::stream()` (log streaming — see
-[Store, users and logs](misc.md#logs--clientlogbuild_or_run_id)).
+[Store, users and logs](misc.md#logs--clientlogbuild_or_run_id)), and `chrono = "0.4"` if you
+construct or read timestamp values yourself (model timestamp fields are `chrono::DateTime<Utc>`
+and `chrono` is not re-exported, so snippets calling `chrono::Utc::now()` — such as the
+`monthly_usage` and account examples — need it as a direct dependency).
 
 Create a client and call a resource:
 
diff --git a/docs/actors.md b/docs/actors.md
index 481c774..6c82a17 100644
--- a/docs/actors.md
+++ b/docs/actors.md
@@ -53,7 +53,14 @@ client-side polling budget:
 
 ### `ActorBuildOptions`
 
-`beta_packages`, `tag`, `use_cache`, `wait_for_finish` — all optional.
+All optional:
+
+- `tag` — build tag to assign to the resulting build (e.g. `latest`).
+- `use_cache` — reuse cached Docker layers from previous builds to speed the build up.
+- `beta_packages` — build against the beta versions of the Apify SDK/CLI packages instead of the
+  stable ones.
+- `wait_for_finish` — maximum number of seconds the server waits for the build to finish before
+  responding (a server-side wait, not client-side polling).
 
 ### Input validation
 
diff --git a/docs/storages.md b/docs/storages.md
index 4ed567b..4138095 100644
--- a/docs/storages.md
+++ b/docs/storages.md
@@ -65,10 +65,31 @@ let scratch = client.datasets().get_or_create(None).await?;
 | `download_items(format, options)` | `DownloadItemsFormat`, `DatasetDownloadOptions` | `Vec<u8>` | Export items as JSON/CSV/XLSX/XML/RSS/HTML. |
 | `create_items_public_url(options, expires)` | `DatasetListItemsOptions`, `Option<i64>` | `String` | Shareable (HMAC-signed for private) items URL. |
 
-`DatasetListItemsOptions`: `offset`, `limit`, `desc`, `fields`, `output_fields`, `omit`,
-`skip_empty`, `skip_hidden`, `clean`, `unwind`, `flatten`, `view`, `simplified`,
-`skip_failed_pages`. `DatasetDownloadOptions` adds `attachment`, `bom`, `delimiter`,
-`skip_header_row`, `xml_root`, `xml_row`, `feed_title`, `feed_description`.
+`DatasetListItemsOptions` (all optional):
+
+- `offset` / `limit` / `desc` — pagination window and reverse (newest-first) ordering.
+- `fields` — comma-separated allow-list of top-level fields to keep in each item.
+- `output_fields` — positionally renames the fields selected by `fields` in the output; requires
+  `fields`, and the two lists must have equal length (the i-th `output_fields` name becomes the
+  output name of the i-th `fields` entry).
+- `omit` — comma-separated fields to drop from each item.
+- `skip_empty` — omit items that are empty after field filtering.
+- `skip_hidden` — omit hidden fields (those whose names start with `#`).
+- `clean` — shorthand for `skip_hidden` + `skip_empty` (only non-empty, non-hidden items).
+- `unwind` — comma-separated fields whose array values are expanded into separate items.
+- `flatten` — comma-separated fields whose nested objects are flattened into dotted keys.
+- `view` — name of a dataset view to apply.
+- `simplified` — return the simplified form of the items.
+- `skip_failed_pages` — skip pages that failed to be scraped (crawler datasets).
+
+`DatasetDownloadOptions` adds format-specific export controls (all optional):
+
+- `attachment` — set the `Content-Disposition: attachment` header so browsers download the file.
+- `bom` — prepend a UTF-8 byte-order mark (useful for CSV opened in Excel).
+- `delimiter` — CSV field delimiter (default `,`).
+- `skip_header_row` — omit the CSV header row.
+- `xml_root` / `xml_row` — element names for the XML root and per-item rows.
+- `feed_title` / `feed_description` — title and description for RSS output.
 
 `DownloadItemsFormat` (re-exported at the crate root) selects the export format for
 `download_items`. Variants: `Json`, `Jsonl`, `Csv`, `Xlsx`, `Xml`, `Rss`, `Html`. The method
@@ -155,7 +176,6 @@ open-ended and most callers do not consume them structurally. Their shapes (read
 - `list_requests` → an object with `items` (the page of requests), `count`, `limit`, and
   `exclusiveStartId` for cursor continuation.
 - `unlock_requests` → an object reporting how many locks were released (`unlockedCount`).
-- `get_statistics` (datasets) → per-field statistics keyed by field name.
 
 ### `RequestQueueRequest` and request-queue return types
 
diff --git a/src/version.rs b/src/version.rs
index bf2a02b..4c5569f 100644
--- a/src/version.rs
+++ b/src/version.rs
@@ -10,4 +10,4 @@ pub const CLIENT_VERSION: &str = env!("CARGO_PKG_VERSION");
 /// and verified against.
 ///
 /// This corresponds to the `info.version` field of the Apify OpenAPI document.
-pub const API_SPEC_VERSION: &str = "v2-2026-06-30T091455Z";
+pub const API_SPEC_VERSION: &str = "v2-2026-07-02T131926Z";