diff --git a/Cargo.toml b/Cargo.toml
index ff76ea3..1eda8e4 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -12,18 +12,18 @@ categories = ["web-programming::http-client"]
 publish = false # pre
 
 [dependencies]
-base64 = "~0.6.0"
+base64 = "0.9"
 bytes = "0.4"
-encoding_rs = "0.7"
-futures = "0.1.21"
+encoding_rs = "0.8"
+futures = "0.1.23"
 http = "0.1.5"
-hyper = "0.12.2"
+hyper = "0.12.7"
 hyper-old-types = { version = "0.11", optional = true, features = ["compat"] }
 hyper-tls = "0.3"
 libflate = "0.1.11"
 log = "0.4"
 mime = "0.3.7"
-mime_guess = "2.0.0-alpha.4"
+mime_guess = "2.0.0-alpha.6"
 native-tls = "0.2"
 serde = "1.0"
 serde_json = "1.0"
diff --git a/examples/simple.rs b/examples/simple.rs
index d23f702..7c79e9a 100644
--- a/examples/simple.rs
+++ b/examples/simple.rs
@@ -1,20 +1,11 @@
-#![allow(warnings)] // remove when error_chain is fixed
+#![deny(warnings)]
 
 //! `cargo run --example simple`
 
 extern crate reqwest;
 extern crate env_logger;
-#[macro_use]
-extern crate error_chain;
 
-error_chain! {
-    foreign_links {
-        ReqError(reqwest::Error);
-        IoError(std::io::Error);
-    }
-}
-
-fn run() -> Result<()> {
+fn main() -> Result<(), Box<std::error::Error>> {
     env_logger::init();
 
     println!("GET https://www.rust-lang.org");
@@ -25,10 +16,8 @@ fn run() -> Result<()> {
     println!("Headers:\n{:?}", res.headers());
 
     // copy the response body directly to stdout
-    let _ = std::io::copy(&mut res, &mut std::io::stdout())?;
+    std::io::copy(&mut res, &mut std::io::stdout())?;
 
     println!("\n\nDone.");
     Ok(())
 }
-
-quick_main!(run);