diff --git a/crates/uv-client/src/flat_index.rs b/crates/uv-client/src/flat_index.rs
index 1bf9800ce..95be0944b 100644
--- a/crates/uv-client/src/flat_index.rs
+++ b/crates/uv-client/src/flat_index.rs
@@ -14,7 +14,7 @@ use uv_small_str::SmallString;
 
 use crate::cached_client::{CacheControl, CachedClientError};
 use crate::html::SimpleHtml;
-use crate::{Connectivity, Error, ErrorKind, OwnedArchive, RegistryClient};
+use crate::{CachedClient, Connectivity, Error, ErrorKind, OwnedArchive};
 
 #[derive(Debug, thiserror::Error)]
 pub enum FlatIndexError {
@@ -91,14 +91,19 @@ impl FlatIndexEntries {
 /// remote HTML indexes).
 #[derive(Debug, Clone)]
 pub struct FlatIndexClient<'a> {
-    client: &'a RegistryClient,
+    client: &'a CachedClient,
+    connectivity: Connectivity,
     cache: &'a Cache,
 }
 
 impl<'a> FlatIndexClient<'a> {
     /// Create a new [`FlatIndexClient`].
-    pub fn new(client: &'a RegistryClient, cache: &'a Cache) -> Self {
-        Self { client, cache }
+    pub fn new(client: &'a CachedClient, connectivity: Connectivity, cache: &'a Cache) -> Self {
+        Self {
+            client,
+            connectivity,
+            cache,
+        }
     }
 
     /// Read the directories and flat remote indexes from `--find-links`.
@@ -157,7 +162,7 @@ impl<'a> FlatIndexClient<'a> {
             "html",
             format!("{}.msgpack", cache_digest(&url.to_string())),
         );
-        let cache_control = match self.client.connectivity() {
+        let cache_control = match self.connectivity {
             Connectivity::Online => CacheControl::from(
                 self.cache
                     .freshness(&cache_entry, None, None)
@@ -168,7 +173,8 @@ impl<'a> FlatIndexClient<'a> {
 
         let flat_index_request = self
             .client
-            .uncached_client(url)
+            .uncached()
+            .for_host(url)
             .get(url.clone())
             .header("Accept-Encoding", "gzip")
             .header("Accept", "text/html")
@@ -210,7 +216,6 @@ impl<'a> FlatIndexClient<'a> {
         };
         let response = self
             .client
-            .cached_client()
             .get_cacheable_with_retry(
                 flat_index_request,
                 &cache_entry,
diff --git a/crates/uv/src/commands/build_frontend.rs b/crates/uv/src/commands/build_frontend.rs
index 69be6fda9..f4e6bcd27 100644
--- a/crates/uv/src/commands/build_frontend.rs
+++ b/crates/uv/src/commands/build_frontend.rs
@@ -550,7 +550,7 @@ async fn build_package(
 
     // Resolve the flat indexes from `--find-links`.
     let flat_index = {
-        let client = FlatIndexClient::new(&client, cache);
+        let client = FlatIndexClient::new(client.cached_client(), client.connectivity(), cache);
         let entries = client
             .fetch(index_locations.flat_indexes().map(Index::url))
             .await?;
diff --git a/crates/uv/src/commands/pip/compile.rs b/crates/uv/src/commands/pip/compile.rs
index d425f832a..875463a26 100644
--- a/crates/uv/src/commands/pip/compile.rs
+++ b/crates/uv/src/commands/pip/compile.rs
@@ -373,7 +373,7 @@ pub(crate) async fn pip_compile(
 
     // Resolve the flat indexes from `--find-links`.
     let flat_index = {
-        let client = FlatIndexClient::new(&client, &cache);
+        let client = FlatIndexClient::new(client.cached_client(), client.connectivity(), &cache);
         let entries = client
             .fetch(index_locations.flat_indexes().map(Index::url))
             .await?;
diff --git a/crates/uv/src/commands/pip/install.rs b/crates/uv/src/commands/pip/install.rs
index 5e0a50f66..4d98e7b58 100644
--- a/crates/uv/src/commands/pip/install.rs
+++ b/crates/uv/src/commands/pip/install.rs
@@ -366,7 +366,7 @@ pub(crate) async fn pip_install(
 
     // Resolve the flat indexes from `--find-links`.
     let flat_index = {
-        let client = FlatIndexClient::new(&client, &cache);
+        let client = FlatIndexClient::new(client.cached_client(), client.connectivity(), &cache);
         let entries = client
             .fetch(index_locations.flat_indexes().map(Index::url))
             .await?;
diff --git a/crates/uv/src/commands/pip/sync.rs b/crates/uv/src/commands/pip/sync.rs
index d9a63622a..d778b9d27 100644
--- a/crates/uv/src/commands/pip/sync.rs
+++ b/crates/uv/src/commands/pip/sync.rs
@@ -294,7 +294,7 @@ pub(crate) async fn pip_sync(
 
     // Resolve the flat indexes from `--find-links`.
     let flat_index = {
-        let client = FlatIndexClient::new(&client, &cache);
+        let client = FlatIndexClient::new(client.cached_client(), client.connectivity(), &cache);
         let entries = client
             .fetch(index_locations.flat_indexes().map(Index::url))
             .await?;
diff --git a/crates/uv/src/commands/project/add.rs b/crates/uv/src/commands/project/add.rs
index bcd65ee29..b8fd4d988 100644
--- a/crates/uv/src/commands/project/add.rs
+++ b/crates/uv/src/commands/project/add.rs
@@ -345,7 +345,8 @@ pub(crate) async fn add(
 
             // Resolve the flat indexes from `--find-links`.
             let flat_index = {
-                let client = FlatIndexClient::new(&client, cache);
+                let client =
+                    FlatIndexClient::new(client.cached_client(), client.connectivity(), cache);
                 let entries = client
                     .fetch(
                         settings
diff --git a/crates/uv/src/commands/project/lock.rs b/crates/uv/src/commands/project/lock.rs
index aea8dad77..869fc2981 100644
--- a/crates/uv/src/commands/project/lock.rs
+++ b/crates/uv/src/commands/project/lock.rs
@@ -634,7 +634,7 @@ async fn do_lock(
 
     // Resolve the flat indexes from `--find-links`.
     let flat_index = {
-        let client = FlatIndexClient::new(&client, cache);
+        let client = FlatIndexClient::new(client.cached_client(), client.connectivity(), cache);
         let entries = client
             .fetch(index_locations.flat_indexes().map(Index::url))
             .await?;
diff --git a/crates/uv/src/commands/project/mod.rs b/crates/uv/src/commands/project/mod.rs
index f66a1bf0c..d69eb3c3d 100644
--- a/crates/uv/src/commands/project/mod.rs
+++ b/crates/uv/src/commands/project/mod.rs
@@ -1752,7 +1752,7 @@ pub(crate) async fn resolve_environment(
 
     // Resolve the flat indexes from `--find-links`.
     let flat_index = {
-        let client = FlatIndexClient::new(&client, cache);
+        let client = FlatIndexClient::new(client.cached_client(), client.connectivity(), cache);
         let entries = client
             .fetch(index_locations.flat_indexes().map(Index::url))
             .await?;
@@ -1895,7 +1895,7 @@ pub(crate) async fn sync_environment(
 
     // Resolve the flat indexes from `--find-links`.
     let flat_index = {
-        let client = FlatIndexClient::new(&client, cache);
+        let client = FlatIndexClient::new(client.cached_client(), client.connectivity(), cache);
         let entries = client
             .fetch(index_locations.flat_indexes().map(Index::url))
             .await?;
@@ -2122,7 +2122,7 @@ pub(crate) async fn update_environment(
 
     // Resolve the flat indexes from `--find-links`.
     let flat_index = {
-        let client = FlatIndexClient::new(&client, cache);
+        let client = FlatIndexClient::new(client.cached_client(), client.connectivity(), cache);
         let entries = client
             .fetch(index_locations.flat_indexes().map(Index::url))
             .await?;
diff --git a/crates/uv/src/commands/project/sync.rs b/crates/uv/src/commands/project/sync.rs
index 001f25600..d98aa59dc 100644
--- a/crates/uv/src/commands/project/sync.rs
+++ b/crates/uv/src/commands/project/sync.rs
@@ -654,7 +654,7 @@ pub(super) async fn do_sync(
 
     // Resolve the flat indexes from `--find-links`.
     let flat_index = {
-        let client = FlatIndexClient::new(&client, cache);
+        let client = FlatIndexClient::new(client.cached_client(), client.connectivity(), cache);
         let entries = client
             .fetch(index_locations.flat_indexes().map(Index::url))
             .await?;
diff --git a/crates/uv/src/commands/venv.rs b/crates/uv/src/commands/venv.rs
index d679806c0..2b8b22c4a 100644
--- a/crates/uv/src/commands/venv.rs
+++ b/crates/uv/src/commands/venv.rs
@@ -306,7 +306,7 @@ async fn venv_impl(
         // Resolve the flat indexes from `--find-links`.
         let flat_index = {
             let tags = interpreter.tags().map_err(VenvError::Tags)?;
-            let client = FlatIndexClient::new(&client, cache);
+            let client = FlatIndexClient::new(client.cached_client(), client.connectivity(), cache);
             let entries = client
                 .fetch(index_locations.flat_indexes().map(Index::url))
                 .await