diff --git a/metrics-exporter-prometheus/CHANGELOG.md b/metrics-exporter-prometheus/CHANGELOG.md
index 88aa1d30..5b6fa14b 100644
--- a/metrics-exporter-prometheus/CHANGELOG.md
+++ b/metrics-exporter-prometheus/CHANGELOG.md
@@ -11,6 +11,13 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Added
 
 - Users can now configure the number of buckets, and bucket widths, for rolling summaries. ([#444](https://github.com/metrics-rs/metrics/pull/444))
+- Added support to run exporter "upkeep" in the background to periodically drain histograms and help
+  avoid unbounded memory growth over time. ([#460](https://github.com/metrics-rs/metrics/pull/460))
+
+### Changed
+
+- Upgrade to `hyper` 1.x. ([#450](https://github.com/metrics-rs/metrics/pull/450))
+- Enabled upkeep by default, with a five second interval. ([#460](https://github.com/metrics-rs/metrics/pull/460))
 
 ## [0.13.1] - 2024-02-11
 
diff --git a/metrics-exporter-prometheus/src/lib.rs b/metrics-exporter-prometheus/src/lib.rs
index 7553a334..fb221e13 100644
--- a/metrics-exporter-prometheus/src/lib.rs
+++ b/metrics-exporter-prometheus/src/lib.rs
@@ -43,7 +43,8 @@
 //!
 //! Using the exporter is straightforward:
 //!
-//! ```ignore
+//! ```no_run
+//! # use metrics_exporter_prometheus::PrometheusBuilder;
 //! // First, create a builder.
 //! //
 //! // The builder can configure many aspects of the exporter, such as changing the
@@ -66,6 +67,7 @@
 //! // endpoint on.. no problem!  You can build the recorder and install it, and get
 //! // back a handle that can be used to generate the Prometheus scrape output on
 //! // demand:
+//! # let builder = PrometheusBuilder::new();
 //! let handle = builder.install_recorder().expect("failed to install recorder");
 //!
 //! // Maybe you have a more complicated setup and want to be handed back the recorder
@@ -74,11 +76,13 @@
 //! //
 //! // As this is a more advanced method, it _must_ be called from within an existing
 //! // Tokio runtime when the exporter is running in HTTP listener/scrape endpoint mode.
+//! # let builder = PrometheusBuilder::new();
 //! let (recorder, exporter) = builder.build().expect("failed to build recorder/exporter");
 //!
 //! // Finally, maybe you literally only want to build the recorder and nothing else,
 //! // and we've got you covered there, too:
-//! let recorder = builder.build_recorder().expect("failed to build recorder");
+//! # let builder = PrometheusBuilder::new();
+//! let recorder = builder.build_recorder();
 //! ```
 //!
 //! ## Features
@@ -109,6 +113,7 @@ pub use distribution::{Distribution, DistributionBuilder};
 mod exporter;
 pub use self::exporter::builder::PrometheusBuilder;
 #[cfg(any(feature = "http-listener", feature = "push-gateway"))]
+#[cfg_attr(docsrs, doc(cfg(any(feature = "http-listener", feature = "push-gateway"))))]
 pub use self::exporter::ExporterFuture;
 
 pub mod formatting;
diff --git a/metrics-util/CHANGELOG.md b/metrics-util/CHANGELOG.md
index d5fb70e2..ef668282 100644
--- a/metrics-util/CHANGELOG.md
+++ b/metrics-util/CHANGELOG.md
@@ -9,6 +9,11 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased] - ReleaseDate
 
+### Added
+
+- New set of methods on `Registry` for getting a metric handle if it exists. ([#457](https://github.com/metrics-rs/metrics/pull/457))
+- New set of methods on `Registry` for retaining metric handles that match a given predicate. ([#461](https://github.com/metrics-rs/metrics/pull/461))
+
 ### Fixed
 
 - Bump `ahash` back to `0.8.8` to remove range constraint after an upstream fix was provided to
diff --git a/metrics-util/src/lib.rs b/metrics-util/src/lib.rs
index c3052858..4b0ac324 100644
--- a/metrics-util/src/lib.rs
+++ b/metrics-util/src/lib.rs
@@ -5,9 +5,11 @@
 #[cfg(feature = "handles")]
 mod bucket;
 #[cfg(feature = "handles")]
+#[cfg_attr(docsrs, doc(cfg(feature = "handles")))]
 pub use bucket::AtomicBucket;
 
 #[cfg(feature = "debugging")]
+#[cfg_attr(docsrs, doc(cfg(feature = "debugging")))]
 pub mod debugging;
 
 #[cfg(feature = "handles")]
@@ -17,6 +19,7 @@ mod quantile;
 pub use quantile::{parse_quantiles, Quantile};
 
 #[cfg(feature = "registry")]
+#[cfg_attr(docsrs, doc(cfg(feature = "registry")))]
 pub mod registry;
 
 mod common;
@@ -37,6 +40,7 @@ pub use recoverable::RecoverableRecorder;
 #[cfg(feature = "summary")]
 mod summary;
 #[cfg(feature = "summary")]
+#[cfg_attr(docsrs, doc(cfg(feature = "summary")))]
 pub use summary::Summary;
 
 pub mod layers;
diff --git a/metrics-util/src/registry/mod.rs b/metrics-util/src/registry/mod.rs
index 99683925..06e00609 100644
--- a/metrics-util/src/registry/mod.rs
+++ b/metrics-util/src/registry/mod.rs
@@ -15,6 +15,7 @@ pub use storage::{AtomicStorage, Storage};
 mod recency;
 
 #[cfg(feature = "recency")]
+#[cfg_attr(docsrs, doc(cfg(feature = "recency")))]
 pub use recency::{
     Generation, Generational, GenerationalAtomicStorage, GenerationalStorage, Recency,
 };