diff --git a/Sources/SwiftlyCore/HTTPClient.swift b/Sources/SwiftlyCore/HTTPClient.swift
index e2486ca8..244afedc 100644
--- a/Sources/SwiftlyCore/HTTPClient.swift
+++ b/Sources/SwiftlyCore/HTTPClient.swift
@@ -166,9 +166,7 @@ public struct SwiftlyHTTPClient {
         for try await buffer in response.body {
             receivedBytes += buffer.readableBytes
 
-            try buffer.withUnsafeReadableBytes { bufferPtr in
-                try fileHandle.write(contentsOf: bufferPtr)
-            }
+            try fileHandle.write(contentsOf: buffer.readableBytesView)
 
             let now = Date()
             if let reportProgress, lastUpdate.distance(to: now) > 0.25 || receivedBytes == expectedBytes {
@@ -185,5 +183,9 @@ public struct SwiftlyHTTPClient {
 }
 
 private class HTTPClientWrapper {
-    fileprivate let inner = HTTPClient.shared
+    fileprivate let inner = HTTPClient(eventLoopGroupProvider: .singleton)
+
+    deinit {
+        try? self.inner.syncShutdown()
+    }
 }
diff --git a/scripts/install-libarchive.sh b/scripts/install-libarchive.sh
index b6c492f9..728f59ef 100755
--- a/scripts/install-libarchive.sh
+++ b/scripts/install-libarchive.sh
@@ -3,7 +3,7 @@
 set -o errexit
 
 # TODO detect platform
-LIBARCHIVE_VERSION=3.6.1
+LIBARCHIVE_VERSION=3.7.4
 
 mkdir /tmp/archive-build
 pushd /tmp/archive-build