diff --git a/Cargo.toml b/Cargo.toml
index 23b85bf..fb59c33 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -11,7 +11,7 @@ categories = ["web-programming::http-client"]
 
 [dependencies]
 bytes = "0.4"
-futures = "0.1.14"
+futures = "0.1.15"
 hyper = "0.11"
 hyper-tls = "0.1.2"
 libflate = "0.1.11"
diff --git a/src/client.rs b/src/client.rs
index d357832..87e45bb 100644
--- a/src/client.rs
+++ b/src/client.rs
@@ -387,7 +387,11 @@ impl ClientHandle {
         let (tx, rx) = oneshot::channel();
         let (req, body) = request::async(req);
         let url = req.url().clone();
-        self.inner.tx.as_ref().expect("core thread exited early").send((req, tx)).expect("core thread panicked");
+        self.inner.tx
+            .as_ref()
+            .expect("core thread exited early")
+            .unbounded_send((req, tx))
+            .expect("core thread panicked");
 
         if let Some(body) = body {
             try_!(body.send(), &url);