diff --git a/Cargo.lock b/Cargo.lock
index 18460ef1ea..f1f5b42fa4 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -4013,6 +4013,7 @@ dependencies = [
  "env_logger",
  "extension",
  "fs",
+ "http 0.1.0",
  "language",
  "log",
  "rpc",
diff --git a/crates/extension/src/extension_builder.rs b/crates/extension/src/extension_builder.rs
index d20b885eb2..d1928b884d 100644
--- a/crates/extension/src/extension_builder.rs
+++ b/crates/extension/src/extension_builder.rs
@@ -64,10 +64,10 @@ struct CargoTomlPackage {
 }
 
 impl ExtensionBuilder {
-    pub fn new(cache_dir: PathBuf) -> Self {
+    pub fn new(http_client: Arc<dyn HttpClient>, cache_dir: PathBuf) -> Self {
         Self {
             cache_dir,
-            http: http::client(None),
+            http: http_client,
         }
     }
 
diff --git a/crates/extension/src/extension_store.rs b/crates/extension/src/extension_store.rs
index 7e08c8d327..882c79d803 100644
--- a/crates/extension/src/extension_store.rs
+++ b/crates/extension/src/extension_store.rs
@@ -243,7 +243,10 @@ impl ExtensionStore {
             extension_index: Default::default(),
             installed_dir,
             index_path,
-            builder: Arc::new(ExtensionBuilder::new(build_dir)),
+            builder: Arc::new(ExtensionBuilder::new(
+                http::client(http_client.proxy().cloned()),
+                build_dir,
+            )),
             outstanding_operations: Default::default(),
             modified_extensions: Default::default(),
             reload_complete_senders: Vec::new(),
diff --git a/crates/extension_cli/Cargo.toml b/crates/extension_cli/Cargo.toml
index e2094f20b3..6beb8f3408 100644
--- a/crates/extension_cli/Cargo.toml
+++ b/crates/extension_cli/Cargo.toml
@@ -16,8 +16,9 @@ path = "src/main.rs"
 anyhow.workspace = true
 clap = { workspace = true, features = ["derive"] }
 env_logger.workspace = true
-fs.workspace = true
 extension = { workspace = true, features = ["no-webrtc"] }
+fs.workspace = true
+http.workspace = true
 language.workspace = true
 log.workspace = true
 rpc.workspace = true
diff --git a/crates/extension_cli/src/main.rs b/crates/extension_cli/src/main.rs
index 509e4514cd..11b79b8677 100644
--- a/crates/extension_cli/src/main.rs
+++ b/crates/extension_cli/src/main.rs
@@ -13,6 +13,7 @@ use extension::{
     extension_builder::{CompileExtensionOptions, ExtensionBuilder},
     ExtensionManifest,
 };
+use http::HttpClientWithProxy;
 use language::LanguageConfig;
 use theme::ThemeRegistry;
 use tree_sitter::{Language, Query, WasmStore};
@@ -58,7 +59,9 @@ async fn main() -> Result<()> {
     let mut manifest = ExtensionManifest::load(fs.clone(), &extension_path).await?;
 
     log::info!("compiling extension");
-    let builder = ExtensionBuilder::new(scratch_dir);
+
+    let http_client = Arc::new(HttpClientWithProxy::new(None));
+    let builder = ExtensionBuilder::new(http_client, scratch_dir);
     builder
         .compile_extension(
             &extension_path,