diff --git a/crates/wasm-pkg-client/src/lib.rs b/crates/wasm-pkg-client/src/lib.rs
index 98093b3..bc09505 100644
--- a/crates/wasm-pkg-client/src/lib.rs
+++ b/crates/wasm-pkg-client/src/lib.rs
@@ -27,8 +27,9 @@
 //! ```
 
 mod loader;
-mod local;
+pub mod local;
 pub mod oci;
+mod release;
 pub mod warg;
 
 use std::collections::HashMap;
@@ -39,10 +40,7 @@ use futures_util::stream::BoxStream;
 
 use wasm_pkg_common::metadata::RegistryMetadata;
 
-use crate::{
-    loader::PackageLoader, loader::VersionInfo, local::LocalBackend, oci::OciBackend,
-    warg::WargBackend,
-};
+use crate::{loader::PackageLoader, local::LocalBackend, oci::OciBackend, warg::WargBackend};
 
 pub use wasm_pkg_common::{
     config::Config,
@@ -52,6 +50,8 @@ pub use wasm_pkg_common::{
     Error,
 };
 
+pub use release::{Release, VersionInfo};
+
 /// A read-only registry client.
 pub struct Client {
     config: Config,
@@ -168,12 +168,3 @@ impl Client {
         Ok(self.sources.get_mut(&registry).unwrap().as_mut())
     }
 }
-
-/// Package release details.
-///
-/// Returned by [`Client::get_release`] and passed to [`Client::stream_content`].
-#[derive(Clone, Debug)]
-pub struct Release {
-    pub version: Version,
-    pub content_digest: ContentDigest,
-}
diff --git a/crates/wasm-pkg-client/src/loader.rs b/crates/wasm-pkg-client/src/loader.rs
index e73cb0e..4887028 100644
--- a/crates/wasm-pkg-client/src/loader.rs
+++ b/crates/wasm-pkg-client/src/loader.rs
@@ -1,5 +1,3 @@
-use std::cmp::Ordering;
-
 use async_trait::async_trait;
 use bytes::Bytes;
 use futures_util::{stream::BoxStream, StreamExt};
@@ -8,37 +6,7 @@ use wasm_pkg_common::{
     Error,
 };
 
-use crate::Release;
-
-#[derive(Clone, Debug, Eq)]
-pub struct VersionInfo {
-    pub version: Version,
-    pub yanked: bool,
-}
-
-impl Ord for VersionInfo {
-    fn cmp(&self, other: &Self) -> Ordering {
-        self.version.cmp(&other.version)
-    }
-}
-
-impl PartialOrd for VersionInfo {
-    fn partial_cmp(&self, other: &Self) -> Option<Ordering> {
-        Some(self.version.cmp(&other.version))
-    }
-}
-
-impl PartialEq for VersionInfo {
-    fn eq(&self, other: &Self) -> bool {
-        self.version == other.version
-    }
-}
-
-impl std::fmt::Display for VersionInfo {
-    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
-        write!(f, "{version}", version = self.version)
-    }
-}
+use crate::release::{Release, VersionInfo};
 
 #[async_trait]
 pub trait PackageLoader: Send {
diff --git a/crates/wasm-pkg-client/src/local.rs b/crates/wasm-pkg-client/src/local.rs
index 645e691..85723f1 100644
--- a/crates/wasm-pkg-client/src/local.rs
+++ b/crates/wasm-pkg-client/src/local.rs
@@ -1,3 +1,7 @@
+//! Local filesystem-based package backend.
+//!
+//! Each package release is a file: `<root>/<namespace>/<name>/<version>.wasm`
+
 use std::path::PathBuf;
 
 use anyhow::anyhow;
@@ -6,11 +10,16 @@ use bytes::Bytes;
 use futures_util::{stream::BoxStream, StreamExt, TryStreamExt};
 use serde::Deserialize;
 use tokio_util::io::ReaderStream;
-use wasm_pkg_common::{config::RegistryConfig, package::Version};
+use wasm_pkg_common::{
+    config::RegistryConfig,
+    digest::ContentDigest,
+    package::{PackageRef, Version},
+    Error,
+};
 
 use crate::{
-    loader::{PackageLoader, VersionInfo},
-    ContentDigest, Error, PackageRef, Release,
+    loader::PackageLoader,
+    release::{Release, VersionInfo},
 };
 
 #[derive(Clone, Debug, Deserialize)]
@@ -18,10 +27,7 @@ pub struct LocalConfig {
     pub root: PathBuf,
 }
 
-/// A simple local filesystem-based backend.
-///
-/// Each package release is a file: `<root>/<namespace>/<name>/<version>.wasm`
-pub struct LocalBackend {
+pub(crate) struct LocalBackend {
     root: PathBuf,
 }
 
diff --git a/crates/wasm-pkg-client/src/oci/loader.rs b/crates/wasm-pkg-client/src/oci/loader.rs
index 15e5e44..b232516 100644
--- a/crates/wasm-pkg-client/src/oci/loader.rs
+++ b/crates/wasm-pkg-client/src/oci/loader.rs
@@ -6,8 +6,8 @@ use warg_protocol::Version;
 use wasm_pkg_common::{package::PackageRef, Error};
 
 use crate::{
-    loader::{PackageLoader, VersionInfo},
-    Release,
+    loader::PackageLoader,
+    release::{Release, VersionInfo},
 };
 
 use super::{oci_registry_error, OciBackend};
diff --git a/crates/wasm-pkg-client/src/release.rs b/crates/wasm-pkg-client/src/release.rs
new file mode 100644
index 0000000..82d7eba
--- /dev/null
+++ b/crates/wasm-pkg-client/src/release.rs
@@ -0,0 +1,42 @@
+use std::cmp::Ordering;
+
+use wasm_pkg_common::{digest::ContentDigest, package::Version};
+
+/// Package release details.
+///
+/// Returned by [`Client::get_release`] and passed to [`Client::stream_content`].
+#[derive(Clone, Debug)]
+pub struct Release {
+    pub version: Version,
+    pub content_digest: ContentDigest,
+}
+
+#[derive(Clone, Debug, Eq)]
+pub struct VersionInfo {
+    pub version: Version,
+    pub yanked: bool,
+}
+
+impl Ord for VersionInfo {
+    fn cmp(&self, other: &Self) -> Ordering {
+        self.version.cmp(&other.version)
+    }
+}
+
+impl PartialOrd for VersionInfo {
+    fn partial_cmp(&self, other: &Self) -> Option<Ordering> {
+        Some(self.version.cmp(&other.version))
+    }
+}
+
+impl PartialEq for VersionInfo {
+    fn eq(&self, other: &Self) -> bool {
+        self.version == other.version
+    }
+}
+
+impl std::fmt::Display for VersionInfo {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        write!(f, "{version}", version = self.version)
+    }
+}
diff --git a/crates/wasm-pkg-client/src/warg/loader.rs b/crates/wasm-pkg-client/src/warg/loader.rs
index 8a5b119..b210b9e 100644
--- a/crates/wasm-pkg-client/src/warg/loader.rs
+++ b/crates/wasm-pkg-client/src/warg/loader.rs
@@ -8,8 +8,8 @@ use wasm_pkg_common::{
 };
 
 use crate::{
-    loader::{PackageLoader, VersionInfo},
-    Release,
+    loader::PackageLoader,
+    release::{Release, VersionInfo},
 };
 
 use super::{package_ref_to_name, warg_registry_error, WargBackend};