diff --git a/Cargo.toml b/Cargo.toml
index 90b01ac..fbb95ee 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -74,7 +74,7 @@ encoding_rs = "0.8"
 futures-core = { version = "0.3.0", default-features = false }
 futures-util = { version = "0.3.0", default-features = false }
 http-body = "0.3.0"
-hyper = { version = "0.13", default-features = false, features = ["tcp"] }
+hyper = { version = "0.13.3", default-features = false, features = ["tcp"] }
 lazy_static = "1.4"
 log = "0.4"
 mime = "0.3.7"
diff --git a/src/async_impl/client.rs b/src/async_impl/client.rs
index 24d2433..6281697 100644
--- a/src/async_impl/client.rs
+++ b/src/async_impl/client.rs
@@ -300,7 +300,7 @@ impl ClientBuilder {
             builder.http2_initial_connection_window_size(http2_initial_connection_window_size);
         }
 
-        builder.max_idle_per_host(config.max_idle_per_host);
+        builder.pool_max_idle_per_host(config.max_idle_per_host);
 
         if config.http1_title_case_headers {
             builder.http1_title_case_headers(true);